clk/qcom: add driver for sm8250 GCC

Add a clock driver for the SM8250 SoC. This driver can enable necessary
clocks for UART, UFS, USB, and MMC.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
index 6afa62e19879e04edcc658266f75404d86b5da7f..d4bd8c7e6ba6f860ca6b39f9103334990afcb5e4 100644 (file)
--- a/drivers/clk/qcom/Kconfig
+++ b/drivers/clk/qcom/Kconfig
@@ -63,6 +63,14 @@ config CLK_QCOM_SM6115
          on the Snapdragon SM6115 SoC. This driver supports the clocks
          and resets exposed by the GCC hardware block.
 
+config CLK_QCOM_SM8250
+       bool "Qualcomm SM8250 GCC"
+       select CLK_QCOM
+       help
+         Say Y here to enable support for the Global Clock Controller
+         on the Snapdragon SM8250 SoC. This driver supports the clocks
+         and resets exposed by the GCC hardware block.
+
 endmenu
 
 endif

diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile
index d38c5a9fb849fa468bd570c3c2e86c6896040707..f7fc8b9a70f5ea0cf894722008a10b21e0271a9c 100644 (file)
--- a/drivers/clk/qcom/Makefile
+++ b/drivers/clk/qcom/Makefile
@@ -10,3 +10,4 @@ obj-$(CONFIG_CLK_QCOM_IPQ4019) += clock-ipq4019.o
 obj-$(CONFIG_CLK_QCOM_QCM2290) += clock-qcm2290.o
 obj-$(CONFIG_CLK_QCOM_QCS404) += clock-qcs404.o
 obj-$(CONFIG_CLK_QCOM_SM6115) += clock-sm6115.o
+obj-$(CONFIG_CLK_QCOM_SM8250) += clock-sm8250.o

diff --git a/drivers/clk/qcom/clock-qcom.h b/drivers/clk/qcom/clock-qcom.h
index ec524157df2bb1d00758cbf429d9c1cd457022b1..cc170d8e3f9e9e72044edd6c4d63f83f62d20a9c 100644 (file)
--- a/drivers/clk/qcom/clock-qcom.h
+++ b/drivers/clk/qcom/clock-qcom.h
@@ -10,6 +10,7 @@
 #define CFG_CLK_SRC_CXO   (0 << 8)
 #define CFG_CLK_SRC_GPLL0 (1 << 8)
 #define CFG_CLK_SRC_GPLL0_AUX2 (2 << 8)
+#define CFG_CLK_SRC_GPLL9 (2 << 8)
 #define CFG_CLK_SRC_GPLL6 (4 << 8)
 #define CFG_CLK_SRC_GPLL7 (3 << 8)
 #define CFG_CLK_SRC_GPLL0_EVEN (6 << 8)

diff --git a/drivers/clk/qcom/clock-sm8250.c b/drivers/clk/qcom/clock-sm8250.c
new file mode 100644 (file)
index 0000000..af10fc1
--- /dev/null
+++ b/drivers/clk/qcom/clock-sm8250.c
@@ -0,0 +1,282 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Clock drivers for Qualcomm sm8250
+ *
+ * (C) Copyright 2024 Linaro Ltd.
+ */
+
+#include <clk-uclass.h>
+#include <dm.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include <linux/bug.h>
+#include <linux/bitops.h>
+#include <dt-bindings/clock/qcom,gcc-sm8250.h>
+
+#include "clock-qcom.h"
+
+#define GCC_SE12_UART_RCG_REG 0x184D0
+#define GCC_SDCC2_APPS_CLK_SRC_REG 0x1400c
+
+#define APCS_GPLL0_ENA_VOTE 0x79000
+#define APCS_GPLL9_STATUS 0x1c000
+#define APCS_GPLLX_ENA_REG 0x52018
+
+#define USB30_PRIM_MASTER_CLK_CMD_RCGR 0xf020
+#define USB30_PRIM_MOCK_UTMI_CLK_CMD_RCGR 0xf038
+#define USB3_PRIM_PHY_AUX_CMD_RCGR 0xf064
+
+static const struct freq_tbl ftbl_gcc_qupv3_wrap1_s4_clk_src[] = {
+       F(7372800, CFG_CLK_SRC_GPLL0_EVEN, 1, 384, 15625),
+       F(14745600, CFG_CLK_SRC_GPLL0_EVEN, 1, 768, 15625),
+       F(19200000, CFG_CLK_SRC_CXO, 1, 0, 0),
+       F(29491200, CFG_CLK_SRC_GPLL0_EVEN, 1, 1536, 15625),
+       F(32000000, CFG_CLK_SRC_GPLL0_EVEN, 1, 8, 75),
+       F(48000000, CFG_CLK_SRC_GPLL0_EVEN, 1, 4, 25),
+       F(50000000, CFG_CLK_SRC_GPLL0_EVEN, 6, 0, 0),
+       F(64000000, CFG_CLK_SRC_GPLL0_EVEN, 1, 16, 75),
+       F(75000000, CFG_CLK_SRC_GPLL0_EVEN, 4, 0, 0),
+       F(80000000, CFG_CLK_SRC_GPLL0_EVEN, 1, 4, 15),
+       F(96000000, CFG_CLK_SRC_GPLL0_EVEN, 1, 8, 25),
+       F(100000000, CFG_CLK_SRC_GPLL0, 6, 0, 0),
+       {}
+};
+
+static const struct freq_tbl ftbl_gcc_sdcc2_apps_clk_src[] = {
+       F(400000, CFG_CLK_SRC_CXO, 12, 1, 4),
+       F(19200000, CFG_CLK_SRC_CXO, 1, 0, 0),
+       F(25000000, CFG_CLK_SRC_GPLL0_EVEN, 12, 0, 0),
+       F(50000000, CFG_CLK_SRC_GPLL0_EVEN, 6, 0, 0),
+       F(100000000, CFG_CLK_SRC_GPLL0, 6, 0, 0),
+       F(202000000, CFG_CLK_SRC_GPLL9, 4, 0, 0),
+       {}
+};
+
+static struct pll_vote_clk gpll9_vote_clk = {
+       .status = APCS_GPLL9_STATUS,
+       .status_bit = BIT(31),
+       .ena_vote = APCS_GPLLX_ENA_REG,
+       .vote_bit = BIT(9),
+};
+
+static ulong sm8250_set_rate(struct clk *clk, ulong rate)
+{
+       struct msm_clk_priv *priv = dev_get_priv(clk->dev);
+       const struct freq_tbl *freq;
+
+       if (clk->id < priv->data->num_clks)
+               debug("%s: %s, requested rate=%ld\n", __func__,
+                     priv->data->clks[clk->id].name, rate);
+
+       switch (clk->id) {
+       case GCC_QUPV3_WRAP1_S4_CLK: /*UART2*/
+               freq = qcom_find_freq(ftbl_gcc_qupv3_wrap1_s4_clk_src, rate);
+               clk_rcg_set_rate_mnd(priv->base, GCC_SE12_UART_RCG_REG,
+                                    freq->pre_div, freq->m, freq->n, freq->src,
+                                    16);
+
+               return freq->freq;
+       case GCC_SDCC2_APPS_CLK:
+               /* Enable GPLL9 so that we can point SDCC2_APPS_CLK_SRC at it */
+               clk_enable_gpll0(priv->base, &gpll9_vote_clk);
+               freq = qcom_find_freq(ftbl_gcc_sdcc2_apps_clk_src, rate);
+               printf("%s: got freq %u\n", __func__, freq->freq);
+               WARN(freq->src != CFG_CLK_SRC_GPLL9,
+                    "SDCC2_APPS_CLK_SRC not set to GPLL9, requested rate %lu\n",
+                    rate);
+               clk_rcg_set_rate_mnd(priv->base, GCC_SDCC2_APPS_CLK_SRC_REG,
+                                    freq->pre_div, freq->m, freq->n,
+                                    CFG_CLK_SRC_GPLL9, 8);
+
+               return rate;
+       default:
+               return 0;
+       }
+}
+
+static const struct gate_clk sm8250_clks[] = {
+       GATE_CLK(GCC_AGGRE_UFS_CARD_AXI_CLK, 0x750cc, 0x00000001),
+       GATE_CLK(GCC_AGGRE_UFS_PHY_AXI_CLK, 0x770cc, 0x00000001),
+       GATE_CLK(GCC_AGGRE_USB3_PRIM_AXI_CLK, 0x0f080, 0x00000001),
+       GATE_CLK(GCC_AGGRE_USB3_SEC_AXI_CLK, 0x10080, 0x00000001),
+       GATE_CLK(GCC_CFG_NOC_USB3_PRIM_AXI_CLK, 0x0f07c, 0x00000001),
+       GATE_CLK(GCC_CFG_NOC_USB3_SEC_AXI_CLK, 0x1007c, 0x00000001),
+       GATE_CLK(GCC_QMIP_CAMERA_NRT_AHB_CLK, 0x0b018, 0x00000001),
+       GATE_CLK(GCC_QMIP_CAMERA_RT_AHB_CLK, 0x0b01c, 0x00000001),
+       GATE_CLK(GCC_QMIP_DISP_AHB_CLK, 0x0b020, 0x00000001),
+       GATE_CLK(GCC_QMIP_VIDEO_CVP_AHB_CLK, 0x0b010, 0x00000001),
+       GATE_CLK(GCC_QMIP_VIDEO_VCODEC_AHB_CLK, 0x0b014, 0x00000001),
+       GATE_CLK(GCC_QUPV3_WRAP0_CORE_2X_CLK, 0x52008, 0x00000200),
+       GATE_CLK(GCC_QUPV3_WRAP0_CORE_CLK, 0x52008, 0x00000100),
+       GATE_CLK(GCC_QUPV3_WRAP0_S0_CLK, 0x52008, 0x00000400),
+       GATE_CLK(GCC_QUPV3_WRAP0_S1_CLK, 0x52008, 0x00000800),
+       GATE_CLK(GCC_QUPV3_WRAP0_S2_CLK, 0x52008, 0x00001000),
+       GATE_CLK(GCC_QUPV3_WRAP0_S3_CLK, 0x52008, 0x00002000),
+       GATE_CLK(GCC_QUPV3_WRAP0_S4_CLK, 0x52008, 0x00004000),
+       GATE_CLK(GCC_QUPV3_WRAP0_S5_CLK, 0x52008, 0x00008000),
+       GATE_CLK(GCC_QUPV3_WRAP0_S6_CLK, 0x52008, 0x00010000),
+       GATE_CLK(GCC_QUPV3_WRAP0_S7_CLK, 0x52008, 0x00020000),
+       GATE_CLK(GCC_QUPV3_WRAP1_CORE_2X_CLK, 0x52008, 0x00040000),
+       GATE_CLK(GCC_QUPV3_WRAP1_CORE_CLK, 0x52008, 0x00080000),
+       GATE_CLK(GCC_QUPV3_WRAP1_S0_CLK, 0x52008, 0x00400000),
+       GATE_CLK(GCC_QUPV3_WRAP1_S1_CLK, 0x52008, 0x00800000),
+       GATE_CLK(GCC_QUPV3_WRAP1_S2_CLK, 0x52008, 0x01000000),
+       GATE_CLK(GCC_QUPV3_WRAP1_S3_CLK, 0x52008, 0x02000000),
+       GATE_CLK(GCC_QUPV3_WRAP1_S4_CLK, 0x52008, 0x04000000),
+       GATE_CLK(GCC_QUPV3_WRAP1_S5_CLK, 0x52008, 0x08000000),
+       GATE_CLK(GCC_QUPV3_WRAP2_CORE_2X_CLK, 0x52010, 0x00000008),
+       GATE_CLK(GCC_QUPV3_WRAP2_CORE_CLK, 0x52010, 0x00000001),
+       GATE_CLK(GCC_QUPV3_WRAP2_S0_CLK, 0x52010, 0x00000010),
+       GATE_CLK(GCC_QUPV3_WRAP2_S1_CLK, 0x52010, 0x00000020),
+       GATE_CLK(GCC_QUPV3_WRAP2_S2_CLK, 0x52010, 0x00000040),
+       GATE_CLK(GCC_QUPV3_WRAP2_S3_CLK, 0x52010, 0x00000080),
+       GATE_CLK(GCC_QUPV3_WRAP2_S4_CLK, 0x52010, 0x00000100),
+       GATE_CLK(GCC_QUPV3_WRAP2_S5_CLK, 0x52010, 0x00000200),
+       GATE_CLK(GCC_QUPV3_WRAP_0_M_AHB_CLK, 0x52008, 0x00000040),
+       GATE_CLK(GCC_QUPV3_WRAP_0_S_AHB_CLK, 0x52008, 0x00000080),
+       GATE_CLK(GCC_QUPV3_WRAP_1_M_AHB_CLK, 0x52008, 0x00100000),
+       GATE_CLK(GCC_QUPV3_WRAP_1_S_AHB_CLK, 0x52008, 0x00200000),
+       GATE_CLK(GCC_QUPV3_WRAP_2_M_AHB_CLK, 0x52010, 0x00000004),
+       GATE_CLK(GCC_QUPV3_WRAP_2_S_AHB_CLK, 0x52010, 0x00000002),
+       GATE_CLK(GCC_SDCC2_AHB_CLK, 0x14008, 0x00000001),
+       GATE_CLK(GCC_SDCC2_APPS_CLK, 0x14004, 0x00000001),
+       GATE_CLK(GCC_SDCC4_AHB_CLK, 0x16008, 0x00000001),
+       GATE_CLK(GCC_SDCC4_APPS_CLK, 0x16004, 0x00000001),
+       GATE_CLK(GCC_UFS_CARD_AHB_CLK, 0x75018, 0x00000001),
+       GATE_CLK(GCC_UFS_CARD_AXI_CLK, 0x75010, 0x00000001),
+       GATE_CLK(GCC_UFS_CARD_ICE_CORE_CLK, 0x75064, 0x00000001),
+       GATE_CLK(GCC_UFS_CARD_PHY_AUX_CLK, 0x7509c, 0x00000001),
+       GATE_CLK(GCC_UFS_CARD_RX_SYMBOL_0_CLK, 0x75020, 0x00000001),
+       GATE_CLK(GCC_UFS_CARD_RX_SYMBOL_1_CLK, 0x750b8, 0x00000001),
+       GATE_CLK(GCC_UFS_CARD_TX_SYMBOL_0_CLK, 0x7501c, 0x00000001),
+       GATE_CLK(GCC_UFS_CARD_UNIPRO_CORE_CLK, 0x7505c, 0x00000001),
+       GATE_CLK(GCC_UFS_PHY_AHB_CLK, 0x77018, 0x00000001),
+       GATE_CLK(GCC_UFS_PHY_AXI_CLK, 0x77010, 0x00000001),
+       GATE_CLK(GCC_UFS_PHY_ICE_CORE_CLK, 0x77064, 0x00000001),
+       GATE_CLK(GCC_UFS_PHY_PHY_AUX_CLK, 0x7709c, 0x00000001),
+       GATE_CLK(GCC_UFS_PHY_RX_SYMBOL_0_CLK, 0x77020, 0x00000001),
+       GATE_CLK(GCC_UFS_PHY_RX_SYMBOL_1_CLK, 0x770b8, 0x00000001),
+       GATE_CLK(GCC_UFS_PHY_TX_SYMBOL_0_CLK, 0x7701c, 0x00000001),
+       GATE_CLK(GCC_UFS_PHY_UNIPRO_CORE_CLK, 0x7705c, 0x00000001),
+       GATE_CLK(GCC_USB30_PRIM_MASTER_CLK, 0x0f010, 0x00000001),
+       GATE_CLK(GCC_USB30_PRIM_MOCK_UTMI_CLK, 0x0f01c, 0x00000001),
+       GATE_CLK(GCC_USB30_PRIM_SLEEP_CLK, 0x0f018, 0x00000001),
+       GATE_CLK(GCC_USB30_SEC_MASTER_CLK, 0x10010, 0x00000001),
+       GATE_CLK(GCC_USB30_SEC_MOCK_UTMI_CLK, 0x1001c, 0x00000001),
+       GATE_CLK(GCC_USB30_SEC_SLEEP_CLK, 0x10018, 0x00000001),
+       GATE_CLK(GCC_USB3_PRIM_PHY_AUX_CLK, 0x0f054, 0x00000001),
+       GATE_CLK(GCC_USB3_PRIM_PHY_COM_AUX_CLK, 0x0f058, 0x00000001),
+       GATE_CLK(GCC_USB3_PRIM_PHY_PIPE_CLK, 0x0f05c, 0x00000001),
+       GATE_CLK(GCC_USB3_SEC_CLKREF_EN, 0x8c010, 0x00000001),
+       GATE_CLK(GCC_USB3_SEC_PHY_AUX_CLK, 0x10054, 0x00000001),
+       GATE_CLK(GCC_USB3_SEC_PHY_COM_AUX_CLK, 0x10058, 0x00000001),
+       GATE_CLK(GCC_USB3_SEC_PHY_PIPE_CLK, 0x1005c, 0x00000001),
+};
+
+static int sm8250_enable(struct clk *clk)
+{
+       struct msm_clk_priv *priv = dev_get_priv(clk->dev);
+
+       if (priv->data->num_clks < clk->id) {
+               debug("%s: unknown clk id %lu\n", __func__, clk->id);
+               return 0;
+       }
+
+       debug("%s: clk %s\n", __func__, sm8250_clks[clk->id].name);
+
+       switch (clk->id) {
+       case GCC_USB30_PRIM_MASTER_CLK:
+               qcom_gate_clk_en(priv, GCC_USB3_PRIM_PHY_AUX_CLK);
+               qcom_gate_clk_en(priv, GCC_USB3_PRIM_PHY_COM_AUX_CLK);
+               break;
+       case GCC_USB30_SEC_MASTER_CLK:
+               qcom_gate_clk_en(priv, GCC_USB3_SEC_PHY_AUX_CLK);
+               qcom_gate_clk_en(priv, GCC_USB3_SEC_PHY_COM_AUX_CLK);
+               break;
+       }
+
+       qcom_gate_clk_en(priv, clk->id);
+
+       return 0;
+}
+
+static const struct qcom_reset_map sm8250_gcc_resets[] = {
+       [GCC_GPU_BCR] = { 0x71000 },
+       [GCC_MMSS_BCR] = { 0xb000 },
+       [GCC_NPU_BWMON_BCR] = { 0x73000 },
+       [GCC_NPU_BCR] = { 0x4d000 },
+       [GCC_PCIE_0_BCR] = { 0x6b000 },
+       [GCC_PCIE_0_LINK_DOWN_BCR] = { 0x6c014 },
+       [GCC_PCIE_0_NOCSR_COM_PHY_BCR] = { 0x6c020 },
+       [GCC_PCIE_0_PHY_BCR] = { 0x6c01c },
+       [GCC_PCIE_0_PHY_NOCSR_COM_PHY_BCR] = { 0x6c028 },
+       [GCC_PCIE_1_BCR] = { 0x8d000 },
+       [GCC_PCIE_1_LINK_DOWN_BCR] = { 0x8e014 },
+       [GCC_PCIE_1_NOCSR_COM_PHY_BCR] = { 0x8e020 },
+       [GCC_PCIE_1_PHY_BCR] = { 0x8e01c },
+       [GCC_PCIE_1_PHY_NOCSR_COM_PHY_BCR] = { 0x8e000 },
+       [GCC_PCIE_2_BCR] = { 0x6000 },
+       [GCC_PCIE_2_LINK_DOWN_BCR] = { 0x1f014 },
+       [GCC_PCIE_2_NOCSR_COM_PHY_BCR] = { 0x1f020 },
+       [GCC_PCIE_2_PHY_BCR] = { 0x1f01c },
+       [GCC_PCIE_2_PHY_NOCSR_COM_PHY_BCR] = { 0x1f028 },
+       [GCC_PCIE_PHY_BCR] = { 0x6f000 },
+       [GCC_PCIE_PHY_CFG_AHB_BCR] = { 0x6f00c },
+       [GCC_PCIE_PHY_COM_BCR] = { 0x6f010 },
+       [GCC_PDM_BCR] = { 0x33000 },
+       [GCC_PRNG_BCR] = { 0x34000 },
+       [GCC_QUPV3_WRAPPER_0_BCR] = { 0x17000 },
+       [GCC_QUPV3_WRAPPER_1_BCR] = { 0x18000 },
+       [GCC_QUPV3_WRAPPER_2_BCR] = { 0x1e000 },
+       [GCC_QUSB2PHY_PRIM_BCR] = { 0x12000 },
+       [GCC_QUSB2PHY_SEC_BCR] = { 0x12004 },
+       [GCC_SDCC2_BCR] = { 0x14000 },
+       [GCC_SDCC4_BCR] = { 0x16000 },
+       [GCC_TSIF_BCR] = { 0x36000 },
+       [GCC_UFS_CARD_BCR] = { 0x75000 },
+       [GCC_UFS_PHY_BCR] = { 0x77000 },
+       [GCC_USB30_PRIM_BCR] = { 0xf000 },
+       [GCC_USB30_SEC_BCR] = { 0x10000 },
+       [GCC_USB3_DP_PHY_PRIM_BCR] = { 0x50008 },
+       [GCC_USB3_DP_PHY_SEC_BCR] = { 0x50014 },
+       [GCC_USB3_PHY_PRIM_BCR] = { 0x50000 },
+       [GCC_USB3_PHY_SEC_BCR] = { 0x5000c },
+       [GCC_USB3PHY_PHY_PRIM_BCR] = { 0x50004 },
+       [GCC_USB3PHY_PHY_SEC_BCR] = { 0x50010 },
+       [GCC_USB_PHY_CFG_AHB2PHY_BCR] = { 0x6a000 },
+};
+
+static const struct qcom_power_map sm8250_gdscs[] = {
+       [PCIE_0_GDSC] = { 0x6b004 },    [PCIE_1_GDSC] = { 0x8d004 },
+       [PCIE_2_GDSC] = { 0x6004 },     [UFS_CARD_GDSC] = { 0x75004 },
+       [UFS_PHY_GDSC] = { 0x77004 },   [USB30_PRIM_GDSC] = { 0xf004 },
+       [USB30_SEC_GDSC] = { 0x10004 },
+};
+
+static struct msm_clk_data qcs404_gcc_data = {
+       .resets = sm8250_gcc_resets,
+       .num_resets = ARRAY_SIZE(sm8250_gcc_resets),
+       .clks = sm8250_clks,
+       .num_clks = ARRAY_SIZE(sm8250_clks),
+       .power_domains = sm8250_gdscs,
+       .num_power_domains = ARRAY_SIZE(sm8250_gdscs),
+
+       .enable = sm8250_enable,
+       .set_rate = sm8250_set_rate,
+};
+
+static const struct udevice_id gcc_sm8250_of_match[] = {
+       {
+               .compatible = "qcom,gcc-sm8250",
+               .data = (ulong)&qcs404_gcc_data,
+       },
+       {}
+};
+
+U_BOOT_DRIVER(gcc_sm8250) = {
+       .name = "gcc_sm8250",
+       .id = UCLASS_NOP,
+       .of_match = gcc_sm8250_of_match,
+       .bind = qcom_cc_bind,
+       .flags = DM_FLAG_PRE_RELOC,
+};