clk: sunxi: Add Allwinner A10s/A13 CLK driver

Add initial clock driver for Allwinner A10s/A13.

- Implement USB ahb and USB clocks via ccu_clk_gate table
  for A10s/A13, so it can accessed in common clk enable and
  disable functions from clk_sunxi.c
- Implement USB resets via ccu_reset table for A10s/A13,
  so it can accessed in common reset deassert and assert
  functions from reset-sunxi.c

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>

diff --git a/drivers/clk/sunxi/Kconfig b/drivers/clk/sunxi/Kconfig
index fbbf94ef5594cfa95690bd41d242ef0af221bdb8..b228c2fa3addc7609284b3443ec5b0a694f22a72 100644 (file)
--- a/drivers/clk/sunxi/Kconfig
+++ b/drivers/clk/sunxi/Kconfig
@@ -16,6 +16,13 @@ config CLK_SUN4I_A10
          This enables common clock driver support for platforms based
          on Allwinner A10/A20 SoC.
 
+config CLK_SUN5I_A10S
+       bool "Clock driver for Allwinner A10s/A13"
+       default MACH_SUN5I
+       help
+         This enables common clock driver support for platforms based
+         on Allwinner A10s/A13 SoC.
+
 config CLK_SUN8I_H3
        bool "Clock driver for Allwinner H3/H5"
        default MACH_SUNXI_H3_H5

diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile
index bba830922f5b7bd27005e003ff7522aca41b5cd8..466d4b79d65d5e99f6bfc2b177047cebec9650f9 100644 (file)
--- a/drivers/clk/sunxi/Makefile
+++ b/drivers/clk/sunxi/Makefile
@@ -7,5 +7,6 @@
 obj-$(CONFIG_CLK_SUNXI) += clk_sunxi.o
 
 obj-$(CONFIG_CLK_SUN4I_A10) += clk_a10.o
+obj-$(CONFIG_CLK_SUN5I_A10S) += clk_a10s.o
 obj-$(CONFIG_CLK_SUN8I_H3) += clk_h3.o
 obj-$(CONFIG_CLK_SUN50I_A64) += clk_a64.o

diff --git a/drivers/clk/sunxi/clk_a10s.c b/drivers/clk/sunxi/clk_a10s.c
new file mode 100644 (file)
index 0000000..bf91018
--- /dev/null
+++ b/drivers/clk/sunxi/clk_a10s.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2018 Amarula Solutions.
+ * Author: Jagan Teki <jagan@amarulasolutions.com>
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <errno.h>
+#include <asm/arch/ccu.h>
+#include <dt-bindings/clock/sun5i-ccu.h>
+#include <dt-bindings/reset/sun5i-ccu.h>
+
+static struct ccu_clk_gate a10s_gates[] = {
+       [CLK_AHB_OTG]           = GATE(0x060, BIT(0)),
+       [CLK_AHB_EHCI]          = GATE(0x060, BIT(1)),
+       [CLK_AHB_OHCI]          = GATE(0x060, BIT(2)),
+
+       [CLK_USB_OHCI]          = GATE(0x0cc, BIT(6)),
+       [CLK_USB_PHY0]          = GATE(0x0cc, BIT(8)),
+       [CLK_USB_PHY1]          = GATE(0x0cc, BIT(9)),
+};
+
+static struct ccu_reset a10s_resets[] = {
+       [RST_USB_PHY0]          = RESET(0x0cc, BIT(0)),
+       [RST_USB_PHY1]          = RESET(0x0cc, BIT(1)),
+};
+
+static const struct ccu_desc a10s_ccu_desc = {
+       .gates = a10s_gates,
+       .resets = a10s_resets,
+};
+
+static int a10s_clk_bind(struct udevice *dev)
+{
+       return sunxi_reset_bind(dev, ARRAY_SIZE(a10s_resets));
+}
+
+static const struct udevice_id a10s_ccu_ids[] = {
+       { .compatible = "allwinner,sun5i-a10s-ccu",
+         .data = (ulong)&a10s_ccu_desc },
+       { .compatible = "allwinner,sun5i-a13-ccu",
+         .data = (ulong)&a10s_ccu_desc },
+       { }
+};
+
+U_BOOT_DRIVER(clk_sun5i_a10s) = {
+       .name           = "sun5i_a10s_ccu",
+       .id             = UCLASS_CLK,
+       .of_match       = a10s_ccu_ids,
+       .priv_auto_alloc_size   = sizeof(struct ccu_priv),
+       .ops            = &sunxi_clk_ops,
+       .probe          = sunxi_clk_probe,
+       .bind           = a10s_clk_bind,
+};