--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * R9A06G032 clock driver
+ *
+ * Copyright (C) 2018 Renesas Electronics Europe Limited
+ *
+ * Michel Pollet <michel.pollet@bp.renesas.com>, <buserror@gmail.com>
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <dm/device_compat.h>
+#include <regmap.h>
+#include <syscon.h>
+#include <linux/bitops.h>
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+
+#include <dt-bindings/clock/r9a06g032-sysctrl.h>
+
+/**
+ * struct regbit - describe one bit in a register
+ * @reg: offset of register relative to base address,
+ * expressed in units of 32-bit words (not bytes),
+ * @bit: which bit (0 to 31) in the register
+ *
+ * This structure is used to compactly encode the location
+ * of a single bit in a register. Five bits are needed to
+ * encode the bit number. With uint16_t data type, this
+ * leaves 11 bits to encode a register offset up to 2047.
+ *
+ * Since registers are aligned on 32-bit boundaries, the
+ * offset will be specified in 32-bit words rather than bytes.
+ * This allows encoding an offset up to 0x1FFC (8188) bytes.
+ *
+ * Helper macro RB() takes care of converting the register
+ * offset from bytes to 32-bit words.
+ */
+struct regbit {
+ u16 reg:11;
+ u16 bit:5;
+};
+
+#define RB(_reg, _bit) ((struct regbit) { \
+ .reg = (_reg) / 4, \
+ .bit = (_bit) \
+})
+
+/**
+ * struct r9a06g032_gate - clock-related control bits
+ * @gate: clock enable/disable
+ * @reset: clock module reset (active low)
+ * @ready: enables NoC forwarding of read/write requests to device,
+ * (eg. device is ready to handle read/write requests)
+ * @midle: request to idle the NoC interconnect
+ *
+ * Each of these fields describes a single bit in a register,
+ * which controls some aspect of clock gating. The @gate field
+ * is mandatory, this one enables/disables the clock. The
+ * other fields are optional, with zero indicating "not used".
+ *
+ * In most cases there is a @reset bit which needs to be
+ * de-asserted to bring the module out of reset.
+ *
+ * Modules may also need to signal when the are @ready to
+ * handle requests (read/writes) from the NoC interconnect.
+ *
+ * Similarly, the @midle bit is used to idle the master.
+ */
+struct r9a06g032_gate {
+ struct regbit gate, reset, ready, midle;
+ /* Unused fields omitted to save space */
+ /* struct regbit scon, mirack, mistat */;
+};
+
+enum gate_type {
+ K_GATE = 0, /* gate which enable/disable */
+ K_FFC, /* fixed factor clock */
+ K_DIV, /* divisor */
+ K_BITSEL, /* special for UARTs */
+ K_DUALGATE /* special for UARTs */
+};
+
+/**
+ * struct r9a06g032_clkdesc - describe a single clock
+ * @name: string describing this clock
+ * @managed: boolean indicating if this clock should be
+ * started/stopped as part of power management
+ * (not used in u-boot)
+ * @type: see enum @gate_type
+ * @index: the ID of this clock element
+ * @source: the ID+1 of the parent clock element.
+ * Root clock uses ID of ~0 (PARENT_ID);
+ * @gate: clock enable/disable
+ * @div_min: smallest permitted clock divider
+ * @div_max: largest permitted clock divider
+ * @reg: clock divider register offset, in 32-bit words
+ * @div_table: optional list of fixed clock divider values;
+ * must be in ascending order, zero for unused
+ * @div: divisor for fixed-factor clock
+ * @mul: multiplier for fixed-factor clock
+ * @group: UART group, 0=UART0/1/2, 1=UART3/4/5/6/7
+ * @sel: select either g1/r1 or g2/r2 as clock source
+ * @g1: 1st source gate (clock enable/disable)
+ * @r1: 1st source reset (module reset)
+ * @g2: 2nd source gate (clock enable/disable)
+ * @r2: 2nd source reset (module reset)
+ *
+ * Describes a single element in the clock tree hierarchy.
+ * As there are quite a large number of clock elements, this
+ * structure is packed tightly to conserve space.
+ */
+struct r9a06g032_clkdesc {
+ const char *name;
+ uint32_t managed:1;
+ enum gate_type type:3;
+ uint32_t index:8;
+ uint32_t source:8; /* source index + 1 (0 == none) */
+ union {
+ /* type = K_GATE */
+ struct r9a06g032_gate gate;
+ /* type = K_DIV */
+ struct {
+ unsigned int div_min:10, div_max:10, reg:10;
+ u16 div_table[4];
+ };
+ /* type = K_FFC */
+ struct {
+ u16 div, mul;
+ };
+ /* type = K_DUALGATE */
+ struct {
+ uint16_t group:1;
+ struct regbit sel, g1, r1, g2, r2;
+ } dual;
+ };
+};
+
+/*
+ * The last three arguments are not currently used,
+ * but are kept in the r9a06g032_clocks table below.
+ */
+#define I_GATE(_clk, _rst, _rdy, _midle, _scon, _mirack, _mistat) { \
+ .gate = _clk, \
+ .reset = _rst, \
+ .ready = _rdy, \
+ .midle = _midle, \
+ /* .scon = _scon, */ \
+ /* .mirack = _mirack, */ \
+ /* .mistat = _mistat */ \
+}
+#define D_GATE(_idx, _n, _src, ...) { \
+ .type = K_GATE, \
+ .index = R9A06G032_##_idx, \
+ .source = 1 + R9A06G032_##_src, \
+ .name = _n, \
+ .gate = I_GATE(__VA_ARGS__) \
+}
+#define D_MODULE(_idx, _n, _src, ...) { \
+ .type = K_GATE, \
+ .index = R9A06G032_##_idx, \
+ .source = 1 + R9A06G032_##_src, \
+ .name = _n, \
+ .managed = 1, \
+ .gate = I_GATE(__VA_ARGS__) \
+}
+#define D_ROOT(_idx, _n, _mul, _div) { \
+ .type = K_FFC, \
+ .index = R9A06G032_##_idx, \
+ .name = _n, \
+ .div = _div, \
+ .mul = _mul \
+}
+#define D_FFC(_idx, _n, _src, _div) { \
+ .type = K_FFC, \
+ .index = R9A06G032_##_idx, \
+ .source = 1 + R9A06G032_##_src, \
+ .name = _n, \
+ .div = _div, \
+ .mul = 1 \
+}
+#define D_DIV(_idx, _n, _src, _reg, _min, _max, ...) { \
+ .type = K_DIV, \
+ .index = R9A06G032_##_idx, \
+ .source = 1 + R9A06G032_##_src, \
+ .name = _n, \
+ .reg = _reg, \
+ .div_min = _min, \
+ .div_max = _max, \
+ .div_table = { __VA_ARGS__ } \
+}
+#define D_UGATE(_idx, _n, _src, _g, _g1, _r1, _g2, _r2) { \
+ .type = K_DUALGATE, \
+ .index = R9A06G032_##_idx, \
+ .source = 1 + R9A06G032_##_src, \
+ .name = _n, \
+ .dual = { \
+ .group = _g, \
+ .g1 = _g1, \
+ .r1 = _r1, \
+ .g2 = _g2, \
+ .r2 = _r2 \
+ }, \
+}
+
+/* Internal clock IDs */
+#define R9A06G032_CLKOUT 0
+#define R9A06G032_CLKOUT_D10 2
+#define R9A06G032_CLKOUT_D16 3
+#define R9A06G032_CLKOUT_D160 4
+#define R9A06G032_CLKOUT_D1OR2 5
+#define R9A06G032_CLKOUT_D20 6
+#define R9A06G032_CLKOUT_D40 7
+#define R9A06G032_CLKOUT_D5 8
+#define R9A06G032_CLKOUT_D8 9
+#define R9A06G032_DIV_ADC 10
+#define R9A06G032_DIV_I2C 11
+#define R9A06G032_DIV_NAND 12
+#define R9A06G032_DIV_P1_PG 13
+#define R9A06G032_DIV_P2_PG 14
+#define R9A06G032_DIV_P3_PG 15
+#define R9A06G032_DIV_P4_PG 16
+#define R9A06G032_DIV_P5_PG 17
+#define R9A06G032_DIV_P6_PG 18
+#define R9A06G032_DIV_QSPI0 19
+#define R9A06G032_DIV_QSPI1 20
+#define R9A06G032_DIV_REF_SYNC 21
+#define R9A06G032_DIV_SDIO0 22
+#define R9A06G032_DIV_SDIO1 23
+#define R9A06G032_DIV_SWITCH 24
+#define R9A06G032_DIV_UART 25
+#define R9A06G032_DIV_MOTOR 64
+#define R9A06G032_CLK_DDRPHY_PLLCLK_D4 78
+#define R9A06G032_CLK_ECAT100_D4 79
+#define R9A06G032_CLK_HSR100_D2 80
+#define R9A06G032_CLK_REF_SYNC_D4 81
+#define R9A06G032_CLK_REF_SYNC_D8 82
+#define R9A06G032_CLK_SERCOS100_D2 83
+#define R9A06G032_DIV_CA7 84
+
+#define R9A06G032_UART_GROUP_012 154
+#define R9A06G032_UART_GROUP_34567 155
+
+#define R9A06G032_CLOCK_COUNT (R9A06G032_UART_GROUP_34567 + 1)
+
+static const struct r9a06g032_clkdesc r9a06g032_clocks[] = {
+ D_ROOT(CLKOUT, "clkout", 25, 1),
+ D_ROOT(CLK_PLL_USB, "clk_pll_usb", 12, 10),
+ D_FFC(CLKOUT_D10, "clkout_d10", CLKOUT, 10),
+ D_FFC(CLKOUT_D16, "clkout_d16", CLKOUT, 16),
+ D_FFC(CLKOUT_D160, "clkout_d160", CLKOUT, 160),
+ D_DIV(CLKOUT_D1OR2, "clkout_d1or2", CLKOUT, 0, 1, 2),
+ D_FFC(CLKOUT_D20, "clkout_d20", CLKOUT, 20),
+ D_FFC(CLKOUT_D40, "clkout_d40", CLKOUT, 40),
+ D_FFC(CLKOUT_D5, "clkout_d5", CLKOUT, 5),
+ D_FFC(CLKOUT_D8, "clkout_d8", CLKOUT, 8),
+ D_DIV(DIV_ADC, "div_adc", CLKOUT, 77, 50, 250),
+ D_DIV(DIV_I2C, "div_i2c", CLKOUT, 78, 12, 16),
+ D_DIV(DIV_NAND, "div_nand", CLKOUT, 82, 12, 32),
+ D_DIV(DIV_P1_PG, "div_p1_pg", CLKOUT, 68, 12, 200),
+ D_DIV(DIV_P2_PG, "div_p2_pg", CLKOUT, 62, 12, 128),
+ D_DIV(DIV_P3_PG, "div_p3_pg", CLKOUT, 64, 8, 128),
+ D_DIV(DIV_P4_PG, "div_p4_pg", CLKOUT, 66, 8, 128),
+ D_DIV(DIV_P5_PG, "div_p5_pg", CLKOUT, 71, 10, 40),
+ D_DIV(DIV_P6_PG, "div_p6_pg", CLKOUT, 18, 12, 64),
+ D_DIV(DIV_QSPI0, "div_qspi0", CLKOUT, 73, 3, 7),
+ D_DIV(DIV_QSPI1, "div_qspi1", CLKOUT, 25, 3, 7),
+ D_DIV(DIV_REF_SYNC, "div_ref_sync", CLKOUT, 56, 2, 16, 2, 4, 8, 16),
+ D_DIV(DIV_SDIO0, "div_sdio0", CLKOUT, 74, 20, 128),
+ D_DIV(DIV_SDIO1, "div_sdio1", CLKOUT, 75, 20, 128),
+ D_DIV(DIV_SWITCH, "div_switch", CLKOUT, 37, 5, 40),
+ D_DIV(DIV_UART, "div_uart", CLKOUT, 79, 12, 128),
+ D_GATE(CLK_25_PG4, "clk_25_pg4", CLKOUT_D40, RB(0xe8, 9),
+ RB(0xe8, 10), RB(0xe8, 11), RB(0x00, 0),
+ RB(0x15c, 3), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_25_PG5, "clk_25_pg5", CLKOUT_D40, RB(0xe8, 12),
+ RB(0xe8, 13), RB(0xe8, 14), RB(0x00, 0),
+ RB(0x15c, 4), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_25_PG6, "clk_25_pg6", CLKOUT_D40, RB(0xe8, 15),
+ RB(0xe8, 16), RB(0xe8, 17), RB(0x00, 0),
+ RB(0x15c, 5), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_25_PG7, "clk_25_pg7", CLKOUT_D40, RB(0xe8, 18),
+ RB(0xe8, 19), RB(0xe8, 20), RB(0x00, 0),
+ RB(0x15c, 6), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_25_PG8, "clk_25_pg8", CLKOUT_D40, RB(0xe8, 21),
+ RB(0xe8, 22), RB(0xe8, 23), RB(0x00, 0),
+ RB(0x15c, 7), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_ADC, "clk_adc", DIV_ADC, RB(0x3c, 10),
+ RB(0x3c, 11), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_ECAT100, "clk_ecat100", CLKOUT_D10, RB(0x80, 5),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_HSR100, "clk_hsr100", CLKOUT_D10, RB(0x90, 3),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_I2C0, "clk_i2c0", DIV_I2C, RB(0x3c, 6),
+ RB(0x3c, 7), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_I2C1, "clk_i2c1", DIV_I2C, RB(0x3c, 8),
+ RB(0x3c, 9), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_MII_REF, "clk_mii_ref", CLKOUT_D40, RB(0x68, 2),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_NAND, "clk_nand", DIV_NAND, RB(0x50, 4),
+ RB(0x50, 5), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_NOUSBP2_PG6, "clk_nousbp2_pg6", DIV_P2_PG, RB(0xec, 20),
+ RB(0xec, 21), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_P1_PG2, "clk_p1_pg2", DIV_P1_PG, RB(0x10c, 2),
+ RB(0x10c, 3), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_P1_PG3, "clk_p1_pg3", DIV_P1_PG, RB(0x10c, 4),
+ RB(0x10c, 5), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_P1_PG4, "clk_p1_pg4", DIV_P1_PG, RB(0x10c, 6),
+ RB(0x10c, 7), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_P4_PG3, "clk_p4_pg3", DIV_P4_PG, RB(0x104, 4),
+ RB(0x104, 5), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_P4_PG4, "clk_p4_pg4", DIV_P4_PG, RB(0x104, 6),
+ RB(0x104, 7), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_P6_PG1, "clk_p6_pg1", DIV_P6_PG, RB(0x114, 0),
+ RB(0x114, 1), RB(0x114, 2), RB(0x00, 0),
+ RB(0x16c, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_P6_PG2, "clk_p6_pg2", DIV_P6_PG, RB(0x114, 3),
+ RB(0x114, 4), RB(0x114, 5), RB(0x00, 0),
+ RB(0x16c, 1), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_P6_PG3, "clk_p6_pg3", DIV_P6_PG, RB(0x114, 6),
+ RB(0x114, 7), RB(0x114, 8), RB(0x00, 0),
+ RB(0x16c, 2), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_P6_PG4, "clk_p6_pg4", DIV_P6_PG, RB(0x114, 9),
+ RB(0x114, 10), RB(0x114, 11), RB(0x00, 0),
+ RB(0x16c, 3), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(CLK_PCI_USB, "clk_pci_usb", CLKOUT_D40, RB(0x1c, 6),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_QSPI0, "clk_qspi0", DIV_QSPI0, RB(0x54, 4),
+ RB(0x54, 5), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_QSPI1, "clk_qspi1", DIV_QSPI1, RB(0x90, 4),
+ RB(0x90, 5), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_RGMII_REF, "clk_rgmii_ref", CLKOUT_D8, RB(0x68, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_RMII_REF, "clk_rmii_ref", CLKOUT_D20, RB(0x68, 1),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_SDIO0, "clk_sdio0", DIV_SDIO0, RB(0x0c, 4),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_SDIO1, "clk_sdio1", DIV_SDIO1, RB(0xc8, 4),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_SERCOS100, "clk_sercos100", CLKOUT_D10, RB(0x84, 5),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_SLCD, "clk_slcd", DIV_P1_PG, RB(0x10c, 0),
+ RB(0x10c, 1), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_SPI0, "clk_spi0", DIV_P3_PG, RB(0xfc, 0),
+ RB(0xfc, 1), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_SPI1, "clk_spi1", DIV_P3_PG, RB(0xfc, 2),
+ RB(0xfc, 3), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_SPI2, "clk_spi2", DIV_P3_PG, RB(0xfc, 4),
+ RB(0xfc, 5), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_SPI3, "clk_spi3", DIV_P3_PG, RB(0xfc, 6),
+ RB(0xfc, 7), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_SPI4, "clk_spi4", DIV_P4_PG, RB(0x104, 0),
+ RB(0x104, 1), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_SPI5, "clk_spi5", DIV_P4_PG, RB(0x104, 2),
+ RB(0x104, 3), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_SWITCH, "clk_switch", DIV_SWITCH, RB(0x130, 2),
+ RB(0x130, 3), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_DIV(DIV_MOTOR, "div_motor", CLKOUT_D5, 84, 2, 8),
+ D_MODULE(HCLK_ECAT125, "hclk_ecat125", CLKOUT_D8, RB(0x80, 0),
+ RB(0x80, 1), RB(0x00, 0), RB(0x80, 2),
+ RB(0x00, 0), RB(0x88, 0), RB(0x88, 1)),
+ D_MODULE(HCLK_PINCONFIG, "hclk_pinconfig", CLKOUT_D40, RB(0xe8, 0),
+ RB(0xe8, 1), RB(0xe8, 2), RB(0x00, 0),
+ RB(0x15c, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SERCOS, "hclk_sercos", CLKOUT_D10, RB(0x84, 0),
+ RB(0x84, 2), RB(0x00, 0), RB(0x84, 1),
+ RB(0x00, 0), RB(0x8c, 0), RB(0x8c, 1)),
+ D_MODULE(HCLK_SGPIO2, "hclk_sgpio2", DIV_P5_PG, RB(0x118, 3),
+ RB(0x118, 4), RB(0x118, 5), RB(0x00, 0),
+ RB(0x168, 1), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SGPIO3, "hclk_sgpio3", DIV_P5_PG, RB(0x118, 6),
+ RB(0x118, 7), RB(0x118, 8), RB(0x00, 0),
+ RB(0x168, 2), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SGPIO4, "hclk_sgpio4", DIV_P5_PG, RB(0x118, 9),
+ RB(0x118, 10), RB(0x118, 11), RB(0x00, 0),
+ RB(0x168, 3), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_TIMER0, "hclk_timer0", CLKOUT_D40, RB(0xe8, 3),
+ RB(0xe8, 4), RB(0xe8, 5), RB(0x00, 0),
+ RB(0x15c, 1), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_TIMER1, "hclk_timer1", CLKOUT_D40, RB(0xe8, 6),
+ RB(0xe8, 7), RB(0xe8, 8), RB(0x00, 0),
+ RB(0x15c, 2), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_USBF, "hclk_usbf", CLKOUT_D8, RB(0x1c, 3),
+ RB(0x00, 0), RB(0x00, 0), RB(0x1c, 4),
+ RB(0x00, 0), RB(0x20, 2), RB(0x20, 3)),
+ D_MODULE(HCLK_USBH, "hclk_usbh", CLKOUT_D8, RB(0x1c, 0),
+ RB(0x1c, 1), RB(0x00, 0), RB(0x1c, 2),
+ RB(0x00, 0), RB(0x20, 0), RB(0x20, 1)),
+ D_MODULE(HCLK_USBPM, "hclk_usbpm", CLKOUT_D8, RB(0x1c, 5),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_48_PG_F, "clk_48_pg_f", CLK_48, RB(0xf0, 12),
+ RB(0xf0, 13), RB(0x00, 0), RB(0xf0, 14),
+ RB(0x00, 0), RB(0x160, 4), RB(0x160, 5)),
+ D_GATE(CLK_48_PG4, "clk_48_pg4", CLK_48, RB(0xf0, 9),
+ RB(0xf0, 10), RB(0xf0, 11), RB(0x00, 0),
+ RB(0x160, 3), RB(0x00, 0), RB(0x00, 0)),
+ D_FFC(CLK_DDRPHY_PLLCLK_D4, "clk_ddrphy_pllclk_d4", CLK_DDRPHY_PLLCLK, 4),
+ D_FFC(CLK_ECAT100_D4, "clk_ecat100_d4", CLK_ECAT100, 4),
+ D_FFC(CLK_HSR100_D2, "clk_hsr100_d2", CLK_HSR100, 2),
+ D_FFC(CLK_REF_SYNC_D4, "clk_ref_sync_d4", CLK_REF_SYNC, 4),
+ D_FFC(CLK_REF_SYNC_D8, "clk_ref_sync_d8", CLK_REF_SYNC, 8),
+ D_FFC(CLK_SERCOS100_D2, "clk_sercos100_d2", CLK_SERCOS100, 2),
+ D_DIV(DIV_CA7, "div_ca7", CLK_REF_SYNC, 57, 1, 4, 1, 2, 4),
+ D_MODULE(HCLK_CAN0, "hclk_can0", CLK_48, RB(0xf0, 3),
+ RB(0xf0, 4), RB(0xf0, 5), RB(0x00, 0),
+ RB(0x160, 1), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_CAN1, "hclk_can1", CLK_48, RB(0xf0, 6),
+ RB(0xf0, 7), RB(0xf0, 8), RB(0x00, 0),
+ RB(0x160, 2), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_DELTASIGMA, "hclk_deltasigma", DIV_MOTOR, RB(0x3c, 15),
+ RB(0x3c, 16), RB(0x3c, 17), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_PWMPTO, "hclk_pwmpto", DIV_MOTOR, RB(0x3c, 12),
+ RB(0x3c, 13), RB(0x3c, 14), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_RSV, "hclk_rsv", CLK_48, RB(0xf0, 0),
+ RB(0xf0, 1), RB(0xf0, 2), RB(0x00, 0),
+ RB(0x160, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SGPIO0, "hclk_sgpio0", DIV_MOTOR, RB(0x3c, 0),
+ RB(0x3c, 1), RB(0x3c, 2), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SGPIO1, "hclk_sgpio1", DIV_MOTOR, RB(0x3c, 3),
+ RB(0x3c, 4), RB(0x3c, 5), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_DIV(RTOS_MDC, "rtos_mdc", CLK_REF_SYNC, 100, 80, 640, 80, 160, 320, 640),
+ D_GATE(CLK_CM3, "clk_cm3", CLK_REF_SYNC_D4, RB(0x174, 0),
+ RB(0x174, 1), RB(0x00, 0), RB(0x174, 2),
+ RB(0x00, 0), RB(0x178, 0), RB(0x178, 1)),
+ D_GATE(CLK_DDRC, "clk_ddrc", CLK_DDRPHY_PLLCLK_D4, RB(0x64, 3),
+ RB(0x64, 4), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_ECAT25, "clk_ecat25", CLK_ECAT100_D4, RB(0x80, 3),
+ RB(0x80, 4), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_HSR50, "clk_hsr50", CLK_HSR100_D2, RB(0x90, 4),
+ RB(0x90, 5), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_HW_RTOS, "clk_hw_rtos", CLK_REF_SYNC_D4, RB(0x18c, 0),
+ RB(0x18c, 1), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_GATE(CLK_SERCOS50, "clk_sercos50", CLK_SERCOS100_D2, RB(0x84, 4),
+ RB(0x84, 3), RB(0x00, 0), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_ADC, "hclk_adc", CLK_REF_SYNC_D8, RB(0x34, 15),
+ RB(0x34, 16), RB(0x34, 17), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_CM3, "hclk_cm3", CLK_REF_SYNC_D4, RB(0x184, 0),
+ RB(0x184, 1), RB(0x184, 2), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_CRYPTO_EIP150, "hclk_crypto_eip150", CLK_REF_SYNC_D4, RB(0x24, 3),
+ RB(0x24, 4), RB(0x24, 5), RB(0x00, 0),
+ RB(0x28, 2), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_CRYPTO_EIP93, "hclk_crypto_eip93", CLK_REF_SYNC_D4, RB(0x24, 0),
+ RB(0x24, 1), RB(0x00, 0), RB(0x24, 2),
+ RB(0x00, 0), RB(0x28, 0), RB(0x28, 1)),
+ D_MODULE(HCLK_DDRC, "hclk_ddrc", CLK_REF_SYNC_D4, RB(0x64, 0),
+ RB(0x64, 2), RB(0x00, 0), RB(0x64, 1),
+ RB(0x00, 0), RB(0x74, 0), RB(0x74, 1)),
+ D_MODULE(HCLK_DMA0, "hclk_dma0", CLK_REF_SYNC_D4, RB(0x4c, 0),
+ RB(0x4c, 1), RB(0x4c, 2), RB(0x4c, 3),
+ RB(0x58, 0), RB(0x58, 1), RB(0x58, 2)),
+ D_MODULE(HCLK_DMA1, "hclk_dma1", CLK_REF_SYNC_D4, RB(0x4c, 4),
+ RB(0x4c, 5), RB(0x4c, 6), RB(0x4c, 7),
+ RB(0x58, 3), RB(0x58, 4), RB(0x58, 5)),
+ D_MODULE(HCLK_GMAC0, "hclk_gmac0", CLK_REF_SYNC_D4, RB(0x6c, 0),
+ RB(0x6c, 1), RB(0x6c, 2), RB(0x6c, 3),
+ RB(0x78, 0), RB(0x78, 1), RB(0x78, 2)),
+ D_MODULE(HCLK_GMAC1, "hclk_gmac1", CLK_REF_SYNC_D4, RB(0x70, 0),
+ RB(0x70, 1), RB(0x70, 2), RB(0x70, 3),
+ RB(0x7c, 0), RB(0x7c, 1), RB(0x7c, 2)),
+ D_MODULE(HCLK_GPIO0, "hclk_gpio0", CLK_REF_SYNC_D4, RB(0x40, 18),
+ RB(0x40, 19), RB(0x40, 20), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_GPIO1, "hclk_gpio1", CLK_REF_SYNC_D4, RB(0x40, 21),
+ RB(0x40, 22), RB(0x40, 23), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_GPIO2, "hclk_gpio2", CLK_REF_SYNC_D4, RB(0x44, 9),
+ RB(0x44, 10), RB(0x44, 11), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_HSR, "hclk_hsr", CLK_HSR100_D2, RB(0x90, 0),
+ RB(0x90, 2), RB(0x00, 0), RB(0x90, 1),
+ RB(0x00, 0), RB(0x98, 0), RB(0x98, 1)),
+ D_MODULE(HCLK_I2C0, "hclk_i2c0", CLK_REF_SYNC_D8, RB(0x34, 9),
+ RB(0x34, 10), RB(0x34, 11), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_I2C1, "hclk_i2c1", CLK_REF_SYNC_D8, RB(0x34, 12),
+ RB(0x34, 13), RB(0x34, 14), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_LCD, "hclk_lcd", CLK_REF_SYNC_D4, RB(0xf4, 0),
+ RB(0xf4, 1), RB(0xf4, 2), RB(0x00, 0),
+ RB(0x164, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_MSEBI_M, "hclk_msebi_m", CLK_REF_SYNC_D4, RB(0x2c, 4),
+ RB(0x2c, 5), RB(0x2c, 6), RB(0x00, 0),
+ RB(0x30, 3), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_MSEBI_S, "hclk_msebi_s", CLK_REF_SYNC_D4, RB(0x2c, 0),
+ RB(0x2c, 1), RB(0x2c, 2), RB(0x2c, 3),
+ RB(0x30, 0), RB(0x30, 1), RB(0x30, 2)),
+ D_MODULE(HCLK_NAND, "hclk_nand", CLK_REF_SYNC_D4, RB(0x50, 0),
+ RB(0x50, 1), RB(0x50, 2), RB(0x50, 3),
+ RB(0x5c, 0), RB(0x5c, 1), RB(0x5c, 2)),
+ D_MODULE(HCLK_PG_I, "hclk_pg_i", CLK_REF_SYNC_D4, RB(0xf4, 12),
+ RB(0xf4, 13), RB(0x00, 0), RB(0xf4, 14),
+ RB(0x00, 0), RB(0x164, 4), RB(0x164, 5)),
+ D_MODULE(HCLK_PG19, "hclk_pg19", CLK_REF_SYNC_D4, RB(0x44, 12),
+ RB(0x44, 13), RB(0x44, 14), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_PG20, "hclk_pg20", CLK_REF_SYNC_D4, RB(0x44, 15),
+ RB(0x44, 16), RB(0x44, 17), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_PG3, "hclk_pg3", CLK_REF_SYNC_D4, RB(0xf4, 6),
+ RB(0xf4, 7), RB(0xf4, 8), RB(0x00, 0),
+ RB(0x164, 2), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_PG4, "hclk_pg4", CLK_REF_SYNC_D4, RB(0xf4, 9),
+ RB(0xf4, 10), RB(0xf4, 11), RB(0x00, 0),
+ RB(0x164, 3), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_QSPI0, "hclk_qspi0", CLK_REF_SYNC_D4, RB(0x54, 0),
+ RB(0x54, 1), RB(0x54, 2), RB(0x54, 3),
+ RB(0x60, 0), RB(0x60, 1), RB(0x60, 2)),
+ D_MODULE(HCLK_QSPI1, "hclk_qspi1", CLK_REF_SYNC_D4, RB(0x90, 0),
+ RB(0x90, 1), RB(0x90, 2), RB(0x90, 3),
+ RB(0x98, 0), RB(0x98, 1), RB(0x98, 2)),
+ D_MODULE(HCLK_ROM, "hclk_rom", CLK_REF_SYNC_D4, RB(0x154, 0),
+ RB(0x154, 1), RB(0x154, 2), RB(0x00, 0),
+ RB(0x170, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_RTC, "hclk_rtc", CLK_REF_SYNC_D8, RB(0x140, 0),
+ RB(0x140, 3), RB(0x00, 0), RB(0x140, 2),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SDIO0, "hclk_sdio0", CLK_REF_SYNC_D4, RB(0x0c, 0),
+ RB(0x0c, 1), RB(0x0c, 2), RB(0x0c, 3),
+ RB(0x10, 0), RB(0x10, 1), RB(0x10, 2)),
+ D_MODULE(HCLK_SDIO1, "hclk_sdio1", CLK_REF_SYNC_D4, RB(0xc8, 0),
+ RB(0xc8, 1), RB(0xc8, 2), RB(0xc8, 3),
+ RB(0xcc, 0), RB(0xcc, 1), RB(0xcc, 2)),
+ D_MODULE(HCLK_SEMAP, "hclk_semap", CLK_REF_SYNC_D4, RB(0xf4, 3),
+ RB(0xf4, 4), RB(0xf4, 5), RB(0x00, 0),
+ RB(0x164, 1), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SPI0, "hclk_spi0", CLK_REF_SYNC_D4, RB(0x40, 0),
+ RB(0x40, 1), RB(0x40, 2), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SPI1, "hclk_spi1", CLK_REF_SYNC_D4, RB(0x40, 3),
+ RB(0x40, 4), RB(0x40, 5), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SPI2, "hclk_spi2", CLK_REF_SYNC_D4, RB(0x40, 6),
+ RB(0x40, 7), RB(0x40, 8), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SPI3, "hclk_spi3", CLK_REF_SYNC_D4, RB(0x40, 9),
+ RB(0x40, 10), RB(0x40, 11), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SPI4, "hclk_spi4", CLK_REF_SYNC_D4, RB(0x40, 12),
+ RB(0x40, 13), RB(0x40, 14), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SPI5, "hclk_spi5", CLK_REF_SYNC_D4, RB(0x40, 15),
+ RB(0x40, 16), RB(0x40, 17), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SWITCH, "hclk_switch", CLK_REF_SYNC_D4, RB(0x130, 0),
+ RB(0x00, 0), RB(0x130, 1), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_SWITCH_RG, "hclk_switch_rg", CLK_REF_SYNC_D4, RB(0x188, 0),
+ RB(0x188, 1), RB(0x188, 2), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_UART0, "hclk_uart0", CLK_REF_SYNC_D8, RB(0x34, 0),
+ RB(0x34, 1), RB(0x34, 2), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_UART1, "hclk_uart1", CLK_REF_SYNC_D8, RB(0x34, 3),
+ RB(0x34, 4), RB(0x34, 5), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_UART2, "hclk_uart2", CLK_REF_SYNC_D8, RB(0x34, 6),
+ RB(0x34, 7), RB(0x34, 8), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_UART3, "hclk_uart3", CLK_REF_SYNC_D4, RB(0x40, 24),
+ RB(0x40, 25), RB(0x40, 26), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_UART4, "hclk_uart4", CLK_REF_SYNC_D4, RB(0x40, 27),
+ RB(0x40, 28), RB(0x40, 29), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_UART5, "hclk_uart5", CLK_REF_SYNC_D4, RB(0x44, 0),
+ RB(0x44, 1), RB(0x44, 2), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_UART6, "hclk_uart6", CLK_REF_SYNC_D4, RB(0x44, 3),
+ RB(0x44, 4), RB(0x44, 5), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ D_MODULE(HCLK_UART7, "hclk_uart7", CLK_REF_SYNC_D4, RB(0x44, 6),
+ RB(0x44, 7), RB(0x44, 8), RB(0x00, 0),
+ RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
+ /*
+ * These are not hardware clocks, but are needed to handle the special
+ * case where we have a 'selector bit' that doesn't just change the
+ * parent for a clock, but also the gate it's supposed to use.
+ */
+ {
+ .index = R9A06G032_UART_GROUP_012,
+ .name = "uart_group_012",
+ .type = K_BITSEL,
+ .source = 1 + R9A06G032_DIV_UART,
+ /* R9A06G032_SYSCTRL_REG_PWRCTRL_PG0_0 */
+ .dual.sel = RB(0x34, 30),
+ .dual.group = 0,
+ },
+ {
+ .index = R9A06G032_UART_GROUP_34567,
+ .name = "uart_group_34567",
+ .type = K_BITSEL,
+ .source = 1 + R9A06G032_DIV_P2_PG,
+ /* R9A06G032_SYSCTRL_REG_PWRCTRL_PG1_PR2 */
+ .dual.sel = RB(0xec, 24),
+ .dual.group = 1,
+ },
+ D_UGATE(CLK_UART0, "clk_uart0", UART_GROUP_012, 0,
+ RB(0x34, 18), RB(0x34, 19), RB(0x34, 20), RB(0x34, 21)),
+ D_UGATE(CLK_UART1, "clk_uart1", UART_GROUP_012, 0,
+ RB(0x34, 22), RB(0x34, 23), RB(0x34, 24), RB(0x34, 25)),
+ D_UGATE(CLK_UART2, "clk_uart2", UART_GROUP_012, 0,
+ RB(0x34, 26), RB(0x34, 27), RB(0x34, 28), RB(0x34, 29)),
+ D_UGATE(CLK_UART3, "clk_uart3", UART_GROUP_34567, 1,
+ RB(0xec, 0), RB(0xec, 1), RB(0xec, 2), RB(0xec, 3)),
+ D_UGATE(CLK_UART4, "clk_uart4", UART_GROUP_34567, 1,
+ RB(0xec, 4), RB(0xec, 5), RB(0xec, 6), RB(0xec, 7)),
+ D_UGATE(CLK_UART5, "clk_uart5", UART_GROUP_34567, 1,
+ RB(0xec, 8), RB(0xec, 9), RB(0xec, 10), RB(0xec, 11)),
+ D_UGATE(CLK_UART6, "clk_uart6", UART_GROUP_34567, 1,
+ RB(0xec, 12), RB(0xec, 13), RB(0xec, 14), RB(0xec, 15)),
+ D_UGATE(CLK_UART7, "clk_uart7", UART_GROUP_34567, 1,
+ RB(0xec, 16), RB(0xec, 17), RB(0xec, 18), RB(0xec, 19)),
+};
+
+struct r9a06g032_priv {
+ struct regmap *regmap;
+ struct clk mclk;
+};
+
+static const struct r9a06g032_clkdesc *r9a06g032_clk_get(struct clk *clk)
+{
+ const unsigned long clkid = clk->id & 0xffff;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(r9a06g032_clocks); i++) {
+ if (r9a06g032_clocks[i].index == clkid)
+ return &r9a06g032_clocks[i];
+ }
+
+ return NULL;
+}
+
+#define PARENT_ID (~0)
+
+static int r9a06g032_clk_get_parent(struct clk *clk, struct clk *parent)
+{
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+
+ if (!desc)
+ return -ENOENT;
+
+ if (desc->source)
+ parent->id = desc->source - 1;
+ else
+ parent->id = PARENT_ID; /* Top-level clock */
+
+ parent->dev = clk->dev;
+
+ return 0;
+}
+
+static ulong r9a06g032_clk_get_parent_rate(struct clk *clk)
+{
+ struct clk parent;
+ unsigned long parent_rate;
+ struct r9a06g032_priv *clocks = dev_get_priv(clk->dev);
+
+ if (r9a06g032_clk_get_parent(clk, &parent)) {
+ dev_dbg(clk->dev, "Failed to get parent clock for id=%lu\b", clk->id);
+ return 0;
+ }
+
+ if (parent.id == PARENT_ID)
+ parent_rate = clk_get_rate(&clocks->mclk);
+ else
+ parent_rate = clk_get_rate(&parent);
+
+ if (!parent_rate)
+ dev_dbg(clk->dev, "%s: parent_rate is zero\n", __func__);
+
+ return parent_rate;
+}
+
+/* register/bit pairs are encoded as an uint16_t */
+static void clk_rdesc_set(struct r9a06g032_priv *clocks,
+ struct regbit rb, unsigned int on)
+{
+ uint reg = rb.reg * 4;
+ uint bit = rb.bit;
+
+ if (!reg && !bit)
+ return;
+
+ uint mask = BIT(bit);
+ uint val = (!!on) << bit;
+
+ regmap_update_bits(clocks->regmap, reg, mask, val);
+}
+
+static int clk_rdesc_get(struct r9a06g032_priv *clocks,
+ struct regbit rb)
+{
+ uint reg = rb.reg * 4;
+ uint bit = rb.bit;
+ u32 val = 0;
+
+ regmap_read(clocks->regmap, reg, &val);
+
+ return !!(val & BIT(bit));
+}
+
+/*
+ * Cheating a little bit here: leverage the existing code to control the
+ * per-clock reset. It should really be handled by a reset controller instead.
+ */
+void clk_rzn1_reset_state(struct clk *clk, int on)
+{
+ struct r9a06g032_priv *clocks = dev_get_priv(clk->dev);
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+ const struct r9a06g032_gate *g;
+
+ assert(desc);
+ assert(desc->type == K_GATE);
+ g = &desc->gate;
+
+ clk_rdesc_set(clocks, g->reset, on);
+}
+
+/*
+ * This implements the R9A06G032 clock gate 'driver'. We cannot use the system's
+ * clock gate framework as the gates on the R9A06G032 have a special enabling
+ * sequence, therefore we use this little proxy.
+ */
+static int r9a06g032_clk_gate_set(struct clk *clk, int on)
+{
+ struct r9a06g032_priv *clocks = dev_get_priv(clk->dev);
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+ const struct r9a06g032_gate *g;
+
+ assert(desc);
+ assert(desc->type == K_GATE);
+ g = &desc->gate;
+
+ /* Enable or disable the clock */
+ clk_rdesc_set(clocks, g->gate, on);
+
+ /* De-assert reset */
+ clk_rdesc_set(clocks, g->reset, 1);
+
+ /* Hardware manual recommends 5us delay after enabling clock & reset */
+ udelay(5);
+
+ /* If the peripheral is memory mapped (i.e. an AXI slave), there is an
+ * associated SLVRDY bit in the System Controller that needs to be set
+ * so that the FlexWAY bus fabric passes on the read/write requests.
+ */
+ clk_rdesc_set(clocks, g->ready, on);
+
+ /* Clear 'Master Idle Request' bit */
+ clk_rdesc_set(clocks, g->midle, !on);
+
+ /* Note: We don't wait for FlexWAY Socket Connection signal */
+
+ return 0;
+}
+
+static int r9a06g032_clk_gate_enable(struct clk *clk)
+{
+ return r9a06g032_clk_gate_set(clk, 1);
+}
+
+static int r9a06g032_clk_gate_disable(struct clk *clk)
+{
+ return r9a06g032_clk_gate_set(clk, 0);
+}
+
+/*
+ * Fixed factor clock
+ */
+static ulong r9a06g032_ffc_get_rate(struct clk *clk)
+{
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+ unsigned long parent_rate = r9a06g032_clk_get_parent_rate(clk);
+ unsigned long long rate;
+
+ rate = (unsigned long long)parent_rate * desc->mul;
+ rate = DIV_ROUND_UP(rate, desc->div);
+
+ return (ulong)rate;
+}
+
+/*
+ * This implements R9A06G032 clock divider 'driver'. This differs from the
+ * standard clk_divider because the set_rate method must also set b[31] to
+ * trigger the hardware rate change. In theory it should also wait for this
+ * bit to clear.
+ */
+static ulong r9a06g032_div_get_rate(struct clk *clk)
+{
+ struct r9a06g032_priv *clocks = dev_get_priv(clk->dev);
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+ unsigned long parent_rate = r9a06g032_clk_get_parent_rate(clk);
+ u32 div = 0;
+
+ regmap_read(clocks->regmap, 4 * desc->reg, &div);
+
+ if (div < desc->div_min)
+ div = desc->div_min;
+ else if (div > desc->div_max)
+ div = desc->div_max;
+ return DIV_ROUND_UP(parent_rate, div);
+}
+
+static ulong r9a06g032_div_set_rate(struct clk *clk, ulong rate)
+{
+ struct r9a06g032_priv *clocks = dev_get_priv(clk->dev);
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+ unsigned long parent_rate = r9a06g032_clk_get_parent_rate(clk);
+ size_t i;
+
+ /* + 1 to cope with rates that have the remainder dropped */
+ u32 div = DIV_ROUND_UP(parent_rate, rate + 1);
+
+ /* Clamp to allowable range */
+ if (div < desc->div_min)
+ div = desc->div_min;
+ else if (div > desc->div_max)
+ div = desc->div_max;
+
+ /* Limit to allowable divisors */
+ for (i = 0; i < ARRAY_SIZE(desc->div_table) - 2; i++) {
+ u16 div_m = desc->div_table[i];
+ u16 div_p = desc->div_table[i + 1];
+
+ if (!div_m || !div_p)
+ continue;
+
+ if (div >= div_m && div <= div_p) {
+ /*
+ * select the divider that generates
+ * the value closest to ideal frequency
+ */
+ u32 m = rate - DIV_ROUND_UP(parent_rate, div_m);
+ u32 p = DIV_ROUND_UP(parent_rate, div_p) - rate;
+
+ div = p >= m ? div_m : div_p;
+ }
+ }
+
+ dev_dbg(clk->dev, "%s clkid %lu rate %ld parent %ld div %d\n",
+ __func__, clk->id, rate, parent_rate, div);
+
+ /*
+ * Need to write the bit 31 with the divider value to
+ * latch it. Technically we should wait until it has been
+ * cleared too.
+ * TODO: Find whether this callback is sleepable, in case
+ * the hardware /does/ require some sort of spinloop here.
+ */
+ regmap_write(clocks->regmap, 4 * desc->reg, div | BIT(31));
+
+ return 0;
+}
+
+/*
+ * Dual gate. This handles toggling the approprate clock/reset bits,
+ * which depends on the mux setting above.
+ */
+static int r9a06g032_clk_dualgate_setenable(struct r9a06g032_priv *clocks,
+ const struct r9a06g032_clkdesc *desc,
+ int enable)
+{
+ u8 sel_bit = clk_rdesc_get(clocks, desc->dual.sel);
+ struct regbit gate[2] = { desc->dual.g1, desc->dual.g2 };
+ struct regbit reset[2] = { desc->dual.r1, desc->dual.r2 };
+
+ /* we always turn off the 'other' gate, regardless */
+ clk_rdesc_set(clocks, gate[!sel_bit], 0);
+ clk_rdesc_set(clocks, reset[!sel_bit], 1);
+
+ /* set the gate as requested */
+ clk_rdesc_set(clocks, gate[sel_bit], enable);
+ clk_rdesc_set(clocks, reset[sel_bit], 1);
+
+ return 0;
+}
+
+static int r9a06g032_clk_dualgate_enable(struct clk *clk)
+{
+ struct r9a06g032_priv *clocks = dev_get_priv(clk->dev);
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+
+ return r9a06g032_clk_dualgate_setenable(clocks, desc, 1);
+}
+
+static int r9a06g032_clk_dualgate_disable(struct clk *clk)
+{
+ struct r9a06g032_priv *clocks = dev_get_priv(clk->dev);
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+
+ return r9a06g032_clk_dualgate_setenable(clocks, desc, 0);
+}
+
+static int r9a06g032_clk_dualgate_is_enabled(struct clk *clk)
+{
+ struct r9a06g032_priv *clocks = dev_get_priv(clk->dev);
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+ u8 sel_bit = clk_rdesc_get(clocks, desc->dual.sel);
+ struct regbit gate[2] = { desc->dual.g1, desc->dual.g2 };
+
+ return clk_rdesc_get(clocks, gate[sel_bit]);
+}
+
+/*
+ * Main clock driver
+ */
+static int r9a06g032_clk_enable(struct clk *clk)
+{
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+
+ switch (desc->type) {
+ case K_GATE:
+ return r9a06g032_clk_gate_enable(clk);
+ case K_DUALGATE:
+ return r9a06g032_clk_dualgate_enable(clk);
+ default:
+ dev_dbg(clk->dev, "ERROR: unhandled type=%d\n", desc->type);
+ break;
+ }
+
+ return 0;
+}
+
+static int r9a06g032_clk_disable(struct clk *clk)
+{
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+
+ switch (desc->type) {
+ case K_GATE:
+ return r9a06g032_clk_gate_disable(clk);
+ case K_DUALGATE:
+ return r9a06g032_clk_dualgate_disable(clk);
+ default:
+ dev_dbg(clk->dev, "ERROR: unhandled type=%d\n", desc->type);
+ break;
+ }
+
+ return 0;
+}
+
+static ulong r9a06g032_clk_get_rate(struct clk *clk)
+{
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+ ulong ret = 0;
+
+ assert(desc);
+
+ switch (desc->type) {
+ case K_FFC:
+ ret = r9a06g032_ffc_get_rate(clk);
+ break;
+ case K_GATE:
+ ret = r9a06g032_clk_get_parent_rate(clk);
+ break;
+ case K_DIV:
+ ret = r9a06g032_div_get_rate(clk);
+ break;
+ case K_BITSEL:
+ /*
+ * Look at the mux to determine parent.
+ * 0 means it is coming from UART DIV (group 012 or 34567)
+ * 1 means it is coming from USB_PLL (fixed at 48MHz)
+ */
+ if (r9a06g032_clk_dualgate_is_enabled(clk)) {
+ struct clk usb_clk = { .id = R9A06G032_CLK_PLL_USB };
+
+ ret = r9a06g032_clk_get_parent_rate(&usb_clk);
+ } else {
+ ret = r9a06g032_clk_get_parent_rate(clk);
+ }
+ break;
+ case K_DUALGATE:
+ ret = r9a06g032_clk_get_parent_rate(clk);
+ break;
+ }
+
+ return ret;
+}
+
+static ulong r9a06g032_clk_set_rate(struct clk *clk, ulong rate)
+{
+ const struct r9a06g032_clkdesc *desc = r9a06g032_clk_get(clk);
+ ulong ret = 0;
+
+ assert(desc);
+
+ switch (desc->type) {
+ case K_DIV:
+ ret = r9a06g032_div_set_rate(clk, rate);
+ break;
+ default:
+ dev_dbg(clk->dev, "ERROR: not implemented for %d\n", desc->type);
+ };
+
+ return ret;
+}
+
+static int r9a06g032_clk_of_xlate(struct clk *clk, struct ofnode_phandle_args *args)
+{
+ if (args->args_count != 1) {
+ dev_dbg(clk->dev, "Invalid args_count: %d\n", args->args_count);
+ return -EINVAL;
+ }
+
+ clk->id = args->args[0];
+
+ return 0;
+}
+
+static const struct clk_ops r9a06g032_clk_ops = {
+ .enable = r9a06g032_clk_enable,
+ .disable = r9a06g032_clk_disable,
+ .get_rate = r9a06g032_clk_get_rate,
+ .set_rate = r9a06g032_clk_set_rate,
+ .of_xlate = r9a06g032_clk_of_xlate,
+};
+
+/* Reset Enable Register */
+#define RZN1_SYSCTRL_REG_RSTEN 288 /* 0x120*/
+#define RZN1_SYSCTRL_REG_RSTEN_MRESET_EN BIT(0)
+#define RZN1_SYSCTRL_REG_RSTEN_WDA7RST_CA7_0_EN BIT(1)
+#define RZN1_SYSCTRL_REG_RSTEN_WDA7RST_CA7_1_EN BIT(2)
+#define RZN1_SYSCTRL_REG_RSTEN_WDM3RST_EN BIT(3)
+#define RZN1_SYSCTRL_REG_RSTEN_CM3LOCKUPRST_EN BIT(4)
+#define RZN1_SYSCTRL_REG_RSTEN_CM3SYSRESET_EN BIT(5)
+#define RZN1_SYSCTRL_REG_RSTEN_SWRST_EN BIT(6)
+
+static int r9a06g032_clk_probe(struct udevice *dev)
+{
+ struct r9a06g032_priv *priv = dev_get_priv(dev);
+
+ priv->regmap = syscon_regmap_lookup_by_phandle(dev, "regmap");
+ if (IS_ERR(priv->regmap)) {
+ dev_dbg(dev, "unable to find regmap\n");
+ return PTR_ERR(priv->regmap);
+ }
+
+ /* Enable S/W reset */
+ regmap_write(priv->regmap, RZN1_SYSCTRL_REG_RSTEN,
+ RZN1_SYSCTRL_REG_RSTEN_MRESET_EN |
+ RZN1_SYSCTRL_REG_RSTEN_SWRST_EN);
+
+ /* Get master clock */
+ return clk_get_by_name(dev, "mclk", &priv->mclk);
+}
+
+static const struct udevice_id r9a06g032_clk_ids[] = {
+ { .compatible = "renesas,r9a06g032-sysctrl" },
+ { }
+};
+
+U_BOOT_DRIVER(clk_r9a06g032) = {
+ .name = "clk_r9a06g032",
+ .id = UCLASS_CLK,
+ .of_match = r9a06g032_clk_ids,
+ .priv_auto = sizeof(struct r9a06g032_priv),
+ .ops = &r9a06g032_clk_ops,
+ .probe = &r9a06g032_clk_probe,
+ .flags = DM_FLAG_PRE_RELOC,
+};
projects / u-boot.git / commitdiff