[PATCH v2 06/20] clk: sunxi: Add support for the A523 CCU

[Andre Przywara <andre.przywara@arm.com>]

Add a clock driver for the main clock controller on the Allwinner A523
family of SoCs.
As usual, this just describes the clock gates and reset lines for the
few device that U-Boot cares about: USB, Ethernet, MMC, I2C, SPI.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 drivers/clk/sunxi/Kconfig     |  7 +++
 drivers/clk/sunxi/Makefile    |  1 +
 drivers/clk/sunxi/clk_a523.c  | 85 +++++++++++++++++++++++++++++++++++
 drivers/clk/sunxi/clk_sunxi.c |  5 +++
 4 files changed, 98 insertions(+)
 create mode 100644 drivers/clk/sunxi/clk_a523.c

diff --git a/drivers/clk/sunxi/Kconfig b/drivers/clk/sunxi/Kconfig
index f44db76c182..74e89b86301 100644
--- a/drivers/clk/sunxi/Kconfig
+++ b/drivers/clk/sunxi/Kconfig
@@ -129,4 +129,11 @@ config CLK_SUN50I_A100
 	  This enables common clock driver support for platforms based
 	  on Allwinner A100/A133 SoCs.
 
+config CLK_SUN55I_A523
+	bool "Clock driver for Allwinner A523/T527"
+	default MACH_SUN55I_A523
+	help
+	  This enables common clock driver support for platforms based
+	  on Allwinner A523/T527 SoC.
+
 endif # CLK_SUNXI
diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile
index 7ff71c756e0..dd33eabe2ed 100644
--- a/drivers/clk/sunxi/Makefile
+++ b/drivers/clk/sunxi/Makefile
@@ -25,3 +25,4 @@ obj-$(CONFIG_CLK_SUN50I_H6_R) += clk_h6_r.o
 obj-$(CONFIG_CLK_SUN50I_H616) += clk_h616.o
 obj-$(CONFIG_CLK_SUN50I_A64) += clk_a64.o
 obj-$(CONFIG_CLK_SUN50I_A100) += clk_a100.o
+obj-$(CONFIG_CLK_SUN55I_A523) += clk_a523.o
diff --git a/drivers/clk/sunxi/clk_a523.c b/drivers/clk/sunxi/clk_a523.c
new file mode 100644
index 00000000000..1de95fbaf2f
--- /dev/null
+++ b/drivers/clk/sunxi/clk_a523.c
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2024 Arm Ltd.
+ */
+
+#include <clk-uclass.h>
+#include <dm.h>
+#include <errno.h>
+#include <clk/sunxi.h>
+#include <linux/bitops.h>
+
+#include <dt-bindings/clock/sun55i-a523-ccu.h>
+#include <dt-bindings/reset/sun55i-a523-ccu.h>
+
+static struct ccu_clk_gate a523_gates[] = {
+	[CLK_PLL_PERIPH0_200M]	= GATE_DUMMY,
+	[CLK_APB1]		= GATE_DUMMY,
+
+	[CLK_BUS_MMC0]		= GATE(0x84c, BIT(0)),
+	[CLK_BUS_MMC1]		= GATE(0x84c, BIT(1)),
+	[CLK_BUS_MMC2]		= GATE(0x84c, BIT(2)),
+	[CLK_BUS_UART0]		= GATE(0x90c, BIT(0)),
+	[CLK_BUS_UART1]		= GATE(0x90c, BIT(1)),
+	[CLK_BUS_UART2]		= GATE(0x90c, BIT(2)),
+	[CLK_BUS_UART3]		= GATE(0x90c, BIT(3)),
+	[CLK_BUS_UART4]		= GATE(0x90c, BIT(4)),
+	[CLK_BUS_UART5]		= GATE(0x90c, BIT(5)),
+	[CLK_BUS_I2C0]		= GATE(0x91c, BIT(0)),
+	[CLK_BUS_I2C1]		= GATE(0x91c, BIT(1)),
+	[CLK_BUS_I2C2]		= GATE(0x91c, BIT(2)),
+	[CLK_BUS_I2C3]		= GATE(0x91c, BIT(3)),
+	[CLK_SPI0]		= GATE(0x940, BIT(31)),
+	[CLK_SPI1]		= GATE(0x944, BIT(31)),
+	[CLK_BUS_SPI0]		= GATE(0x96c, BIT(0)),
+	[CLK_BUS_SPI1]		= GATE(0x96c, BIT(1)),
+
+	[CLK_EMAC0_25M]		= GATE(0x970, BIT(30) | BIT(31)),
+	[CLK_EMAC1_25M]		= GATE(0x974, BIT(30) | BIT(31)),
+	[CLK_BUS_EMAC0]		= GATE(0x97c, BIT(0)),
+	[CLK_BUS_EMAC1]		= GATE(0x98c, BIT(0)),
+
+	[CLK_USB_OHCI0]		= GATE(0xa70, BIT(31)),
+	[CLK_USB_OHCI1]		= GATE(0xa74, BIT(31)),
+	[CLK_BUS_OHCI0]		= GATE(0xa8c, BIT(0)),
+	[CLK_BUS_OHCI1]		= GATE(0xa8c, BIT(1)),
+	[CLK_BUS_EHCI0]		= GATE(0xa8c, BIT(4)),
+	[CLK_BUS_EHCI1]		= GATE(0xa8c, BIT(5)),
+	[CLK_BUS_OTG]		= GATE(0xa8c, BIT(8)),
+};
+
+static struct ccu_reset a523_resets[] = {
+	[RST_BUS_MMC0]		= RESET(0x84c, BIT(16)),
+	[RST_BUS_MMC1]		= RESET(0x84c, BIT(17)),
+	[RST_BUS_MMC2]		= RESET(0x84c, BIT(18)),
+	[RST_BUS_UART0]		= RESET(0x90c, BIT(16)),
+	[RST_BUS_UART1]		= RESET(0x90c, BIT(17)),
+	[RST_BUS_UART2]		= RESET(0x90c, BIT(18)),
+	[RST_BUS_UART3]		= RESET(0x90c, BIT(19)),
+	[RST_BUS_UART4]		= RESET(0x90c, BIT(20)),
+	[RST_BUS_UART5]		= RESET(0x90c, BIT(21)),
+	[RST_BUS_I2C0]		= RESET(0x91c, BIT(16)),
+	[RST_BUS_I2C1]		= RESET(0x91c, BIT(17)),
+	[RST_BUS_I2C2]		= RESET(0x91c, BIT(18)),
+	[RST_BUS_I2C3]		= RESET(0x91c, BIT(19)),
+	[RST_BUS_SPI0]		= RESET(0x96c, BIT(16)),
+	[RST_BUS_SPI1]		= RESET(0x96c, BIT(17)),
+
+	[RST_BUS_EMAC0]		= RESET(0x97c, BIT(16)),
+	[RST_BUS_EMAC1]		= RESET(0x98c, BIT(16) | BIT(17)),
+
+	[RST_USB_PHY0]		= RESET(0xa70, BIT(30)),
+	[RST_USB_PHY1]		= RESET(0xa74, BIT(30)),
+	[RST_BUS_OHCI0]		= RESET(0xa8c, BIT(16)),
+	[RST_BUS_OHCI1]		= RESET(0xa8c, BIT(17)),
+	[RST_BUS_EHCI0]		= RESET(0xa8c, BIT(20)),
+	[RST_BUS_EHCI1]		= RESET(0xa8c, BIT(21)),
+	[RST_BUS_OTG]		= RESET(0xa8c, BIT(24)),
+};
+
+const struct ccu_desc a523_ccu_desc = {
+	.gates	= a523_gates,
+	.resets	= a523_resets,
+	.num_gates = ARRAY_SIZE(a523_gates),
+	.num_resets = ARRAY_SIZE(a523_resets),
+};
diff --git a/drivers/clk/sunxi/clk_sunxi.c b/drivers/clk/sunxi/clk_sunxi.c
index e0765cbc6dc..30baabaafcd 100644
--- a/drivers/clk/sunxi/clk_sunxi.c
+++ b/drivers/clk/sunxi/clk_sunxi.c
@@ -126,6 +126,7 @@ extern const struct ccu_desc a100_ccu_desc;
 extern const struct ccu_desc h6_r_ccu_desc;
 extern const struct ccu_desc r40_ccu_desc;
 extern const struct ccu_desc v3s_ccu_desc;
+extern const struct ccu_desc a523_ccu_desc;
 
 static const struct udevice_id sunxi_clk_ids[] = {
 #ifdef CONFIG_CLK_SUN4I_A10
@@ -223,6 +224,10 @@ static const struct udevice_id sunxi_clk_ids[] = {
 #ifdef CONFIG_CLK_SUNIV_F1C100S
 	{ .compatible = "allwinner,suniv-f1c100s-ccu",
 	  .data = (ulong)&f1c100s_ccu_desc },
+#endif
+#ifdef CONFIG_CLK_SUN55I_A523
+	{ .compatible = "allwinner,sun55i-a523-ccu",
+	  .data = (ulong)&a523_ccu_desc },
 #endif
 	{ }
 };
-- 
2.46.3