clk: sunxi: Add drivers for A31 and H6 PRCM CCUs

Add a driver so the clocks/resets for these peripherals (especially I2C,
RSB, and UART) can be enabled using the normal uclass methods.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

4 files changed, 136 insertions, 0 deletions

diff --git a/drivers/clk/sunxi/Kconfig b/drivers/clk/sunxi/Kconfig
index bf084fa7a8..f89c7ffd42 100644
--- a/drivers/clk/sunxi/Kconfig
+++ b/drivers/clk/sunxi/Kconfig
@@ -30,6 +30,13 @@ config CLK_SUN6I_A31
 	  This enables common clock driver support for platforms based
 	  on Allwinner A31/A31s SoC.
 
+config CLK_SUN6I_A31_R
+	bool "Clock driver for Allwinner A31 generation PRCM"
+	default SUNXI_GEN_SUN6I
+	help
+	  This enables common clock driver support for the PRCM
+	  in Allwinner A31/A31s/A23/A33/A83T/H3/A64/H5 SoCs.
+
 config CLK_SUN8I_A23
 	bool "Clock driver for Allwinner A23/A33"
 	default MACH_SUN8I_A23 || MACH_SUN8I_A33
@@ -79,6 +86,13 @@ config CLK_SUN50I_H6
 	  This enables common clock driver support for platforms based
 	  on Allwinner H6 SoC.
 
+config CLK_SUN50I_H6_R
+	bool "Clock driver for Allwinner H6 generation PRCM"
+	default SUN50I_GEN_H6
+	help
+	  This enables common clock driver support for the PRCM
+	  in Allwinner H6/H616 SoCs.
+
 config CLK_SUN50I_H616
 	bool "Clock driver for Allwinner H616"
 	default MACH_SUN50I_H616
diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile
index 4f9282a8b9..48a48a2f00 100644
--- a/drivers/clk/sunxi/Makefile
+++ b/drivers/clk/sunxi/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_CLK_SUNXI) += clk_sun6i_rtc.o
 obj-$(CONFIG_CLK_SUN4I_A10) += clk_a10.o
 obj-$(CONFIG_CLK_SUN5I_A10S) += clk_a10s.o
 obj-$(CONFIG_CLK_SUN6I_A31) += clk_a31.o
+obj-$(CONFIG_CLK_SUN6I_A31_R) += clk_a31_r.o
 obj-$(CONFIG_CLK_SUN8I_A23) += clk_a23.o
 obj-$(CONFIG_CLK_SUN8I_A83T) += clk_a83t.o
 obj-$(CONFIG_CLK_SUN8I_R40) += clk_r40.o
@@ -18,5 +19,6 @@ obj-$(CONFIG_CLK_SUN8I_V3S) += clk_v3s.o
 obj-$(CONFIG_CLK_SUN9I_A80) += clk_a80.o
 obj-$(CONFIG_CLK_SUN8I_H3) += clk_h3.o
 obj-$(CONFIG_CLK_SUN50I_H6) += clk_h6.o
+obj-$(CONFIG_CLK_SUN50I_H6_R) += clk_h6_r.o
 obj-$(CONFIG_CLK_SUN50I_H616) += clk_h616.o
 obj-$(CONFIG_CLK_SUN50I_A64) += clk_a64.o
diff --git a/drivers/clk/sunxi/clk_a31_r.c b/drivers/clk/sunxi/clk_a31_r.c
new file mode 100644
index 0000000000..1f08ea956f
--- /dev/null
+++ b/drivers/clk/sunxi/clk_a31_r.c
@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) Samuel Holland <samuel@sholland.org>
+ */
+
+#include <clk-uclass.h>
+#include <dm.h>
+#include <clk/sunxi.h>
+#include <dt-bindings/clock/sun8i-r-ccu.h>
+#include <dt-bindings/reset/sun8i-r-ccu.h>
+#include <linux/bitops.h>
+
+static struct ccu_clk_gate a31_r_gates[] = {
+	[CLK_APB0_PIO]		= GATE(0x028, BIT(0)),
+	[CLK_APB0_IR]		= GATE(0x028, BIT(1)),
+	[CLK_APB0_TIMER]	= GATE(0x028, BIT(2)),
+	[CLK_APB0_RSB]		= GATE(0x028, BIT(3)),
+	[CLK_APB0_UART]		= GATE(0x028, BIT(4)),
+	[CLK_APB0_I2C]		= GATE(0x028, BIT(6)),
+	[CLK_APB0_TWD]		= GATE(0x028, BIT(7)),
+};
+
+static struct ccu_reset a31_r_resets[] = {
+	[RST_APB0_IR]		= RESET(0x0b0, BIT(1)),
+	[RST_APB0_TIMER]	= RESET(0x0b0, BIT(2)),
+	[RST_APB0_RSB]		= RESET(0x0b0, BIT(3)),
+	[RST_APB0_UART]		= RESET(0x0b0, BIT(4)),
+	[RST_APB0_I2C]		= RESET(0x0b0, BIT(6)),
+};
+
+static const struct ccu_desc a31_r_ccu_desc = {
+	.gates = a31_r_gates,
+	.resets = a31_r_resets,
+};
+
+static int a31_r_clk_bind(struct udevice *dev)
+{
+	return sunxi_reset_bind(dev, ARRAY_SIZE(a31_r_resets));
+}
+
+static const struct udevice_id a31_r_clk_ids[] = {
+	{ .compatible = "allwinner,sun8i-a83t-r-ccu",
+	  .data = (ulong)&a31_r_ccu_desc },
+	{ .compatible = "allwinner,sun8i-h3-r-ccu",
+	  .data = (ulong)&a31_r_ccu_desc },
+	{ .compatible = "allwinner,sun50i-a64-r-ccu",
+	  .data = (ulong)&a31_r_ccu_desc },
+	{ }
+};
+
+U_BOOT_DRIVER(clk_sun6i_a31_r) = {
+	.name		= "sun6i_a31_r_ccu",
+	.id		= UCLASS_CLK,
+	.of_match	= a31_r_clk_ids,
+	.priv_auto	= sizeof(struct ccu_priv),
+	.ops		= &sunxi_clk_ops,
+	.probe		= sunxi_clk_probe,
+	.bind		= a31_r_clk_bind,
+};
diff --git a/drivers/clk/sunxi/clk_h6_r.c b/drivers/clk/sunxi/clk_h6_r.c
new file mode 100644
index 0000000000..b9e527e16a
--- /dev/null
+++ b/drivers/clk/sunxi/clk_h6_r.c
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) Samuel Holland <samuel@sholland.org>
+ */
+
+#include <clk-uclass.h>
+#include <dm.h>
+#include <clk/sunxi.h>
+#include <dt-bindings/clock/sun50i-h6-r-ccu.h>
+#include <dt-bindings/reset/sun50i-h6-r-ccu.h>
+#include <linux/bitops.h>
+
+static struct ccu_clk_gate h6_r_gates[] = {
+	[CLK_R_APB1_TIMER]	= GATE(0x11c, BIT(0)),
+	[CLK_R_APB1_TWD]	= GATE(0x12c, BIT(0)),
+	[CLK_R_APB1_PWM]	= GATE(0x13c, BIT(0)),
+	[CLK_R_APB2_UART]	= GATE(0x18c, BIT(0)),
+	[CLK_R_APB2_I2C]	= GATE(0x19c, BIT(0)),
+	[CLK_R_APB2_RSB]	= GATE(0x1bc, BIT(0)),
+	[CLK_R_APB1_IR]		= GATE(0x1cc, BIT(0)),
+	[CLK_R_APB1_W1]		= GATE(0x1ec, BIT(0)),
+};
+
+static struct ccu_reset h6_r_resets[] = {
+	[RST_R_APB1_TIMER]	= RESET(0x11c, BIT(16)),
+	[RST_R_APB1_TWD]	= RESET(0x12c, BIT(16)),
+	[RST_R_APB1_PWM]	= RESET(0x13c, BIT(16)),
+	[RST_R_APB2_UART]	= RESET(0x18c, BIT(16)),
+	[RST_R_APB2_I2C]	= RESET(0x19c, BIT(16)),
+	[RST_R_APB2_RSB]	= RESET(0x1bc, BIT(16)),
+	[RST_R_APB1_IR]		= RESET(0x1cc, BIT(16)),
+	[RST_R_APB1_W1]		= RESET(0x1ec, BIT(16)),
+};
+
+static const struct ccu_desc h6_r_ccu_desc = {
+	.gates = h6_r_gates,
+	.resets = h6_r_resets,
+};
+
+static int h6_r_clk_bind(struct udevice *dev)
+{
+	return sunxi_reset_bind(dev, ARRAY_SIZE(h6_r_resets));
+}
+
+static const struct udevice_id h6_r_clk_ids[] = {
+	{ .compatible = "allwinner,sun50i-h6-r-ccu",
+	  .data = (ulong)&h6_r_ccu_desc },
+	{ .compatible = "allwinner,sun50i-h616-r-ccu",
+	  .data = (ulong)&h6_r_ccu_desc },
+	{ }
+};
+
+U_BOOT_DRIVER(clk_sun6i_h6_r) = {
+	.name		= "sun6i_h6_r_ccu",
+	.id		= UCLASS_CLK,
+	.of_match	= h6_r_clk_ids,
+	.priv_auto	= sizeof(struct ccu_priv),
+	.ops		= &sunxi_clk_ops,
+	.probe		= sunxi_clk_probe,
+	.bind		= h6_r_clk_bind,
+};