[PATCH 4/8] clk: sunxi: Add support for the A100/A133 CCU
Andre Przywara
andre.przywara at arm.com
Fri Jan 17 02:45:33 CET 2025
The Allwinner A100 SoC has been around for a while, and has now seemingly
been replaced with its close sibling A133.
Add support for the CCU, as far as used by U-Boot proper. Linux has some
basic (clock and pinctrl) support for a while, so we can already use the
existing binding headers.
Signed-off-by: Andre Przywara <andre.przywara at arm.com>
---
arch/arm/mach-sunxi/Kconfig | 3 +
drivers/clk/sunxi/Kconfig | 7 +++
drivers/clk/sunxi/Makefile | 1 +
drivers/clk/sunxi/clk_a100.c | 102 ++++++++++++++++++++++++++++++++++
drivers/clk/sunxi/clk_sunxi.c | 5 ++
5 files changed, 118 insertions(+)
create mode 100644 drivers/clk/sunxi/clk_a100.c
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index ba1b1541437..78fd74f3f28 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -457,6 +457,9 @@ config MACH_SUN50I_H616
select SUN50I_GEN_H6
imply OF_UPSTREAM
+config MACH_SUN50I_A133
+ bool "sun50i (Allwinner A133)"
+
endchoice
# The sun8i SoCs share a lot, this helps to avoid a lot of "if A23 || A33"
diff --git a/drivers/clk/sunxi/Kconfig b/drivers/clk/sunxi/Kconfig
index 8bdc0944896..f44db76c182 100644
--- a/drivers/clk/sunxi/Kconfig
+++ b/drivers/clk/sunxi/Kconfig
@@ -122,4 +122,11 @@ config CLK_SUN50I_A64
This enables common clock driver support for platforms based
on Allwinner A64 SoC.
+config CLK_SUN50I_A100
+ bool "Clock driver for Allwinner A100/A133"
+ default MACH_SUN50I_A133
+ help
+ This enables common clock driver support for platforms based
+ on Allwinner A100/A133 SoCs.
+
endif # CLK_SUNXI
diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile
index 90a277489dc..7ff71c756e0 100644
--- a/drivers/clk/sunxi/Makefile
+++ b/drivers/clk/sunxi/Makefile
@@ -24,3 +24,4 @@ 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
+obj-$(CONFIG_CLK_SUN50I_A100) += clk_a100.o
diff --git a/drivers/clk/sunxi/clk_a100.c b/drivers/clk/sunxi/clk_a100.c
new file mode 100644
index 00000000000..b641feb8612
--- /dev/null
+++ b/drivers/clk/sunxi/clk_a100.c
@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2023-2024 Arm Ltd.
+ */
+
+#include <clk/sunxi.h>
+#include <dt-bindings/clock/sun50i-a100-ccu.h>
+#include <dt-bindings/reset/sun50i-a100-ccu.h>
+#include <linux/bitops.h>
+
+static struct ccu_clk_gate a100_gates[] = {
+ [CLK_PLL_PERIPH0] = GATE(0x020, BIT(31) | BIT(27)),
+
+ [CLK_APB1] = GATE_DUMMY,
+
+ [CLK_DE] = GATE(0x600, BIT(31)),
+ [CLK_BUS_DE] = GATE(0x60c, BIT(0)),
+
+ [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_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_SPI2] = GATE(0x948, BIT(31)),
+
+ [CLK_BUS_SPI0] = GATE(0x96c, BIT(0)),
+ [CLK_BUS_SPI1] = GATE(0x96c, BIT(1)),
+ [CLK_BUS_SPI2] = GATE(0x96c, BIT(2)),
+
+ [CLK_BUS_EMAC] = GATE(0x97c, BIT(0)),
+
+ [CLK_USB_PHY0] = GATE(0xa70, BIT(29)),
+ [CLK_USB_OHCI0] = GATE(0xa70, BIT(31)),
+
+ [CLK_USB_PHY1] = GATE(0xa74, BIT(29)),
+ [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)),
+
+ [CLK_TCON_LCD] = GATE(0xb60, BIT(31)),
+ [CLK_BUS_TCON_LCD] = GATE(0xb7c, BIT(0)),
+};
+
+static struct ccu_reset a100_resets[] = {
+ [RST_BUS_DE] = RESET(0x60c, BIT(16)),
+
+ [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_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_SPI2] = RESET(0x96c, BIT(18)),
+
+ [RST_BUS_EMAC] = RESET(0x97c, BIT(16)),
+
+ [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)),
+
+ [RST_BUS_TCON_LCD] = RESET(0xb7c, BIT(16)),
+};
+
+const struct ccu_desc a100_ccu_desc = {
+ .gates = a100_gates,
+ .resets = a100_resets,
+ .num_gates = ARRAY_SIZE(a100_gates),
+ .num_resets = ARRAY_SIZE(a100_resets),
+};
diff --git a/drivers/clk/sunxi/clk_sunxi.c b/drivers/clk/sunxi/clk_sunxi.c
index 2ef4f45dacf..e0765cbc6dc 100644
--- a/drivers/clk/sunxi/clk_sunxi.c
+++ b/drivers/clk/sunxi/clk_sunxi.c
@@ -122,6 +122,7 @@ extern const struct ccu_desc f1c100s_ccu_desc;
extern const struct ccu_desc h3_ccu_desc;
extern const struct ccu_desc h6_ccu_desc;
extern const struct ccu_desc h616_ccu_desc;
+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;
@@ -215,6 +216,10 @@ static const struct udevice_id sunxi_clk_ids[] = {
{ .compatible = "allwinner,sun50i-h616-r-ccu",
.data = (ulong)&h6_r_ccu_desc },
#endif
+#ifdef CONFIG_CLK_SUN50I_A100
+ { .compatible = "allwinner,sun50i-a100-ccu",
+ .data = (ulong)&a100_ccu_desc },
+#endif
#ifdef CONFIG_CLK_SUNIV_F1C100S
{ .compatible = "allwinner,suniv-f1c100s-ccu",
.data = (ulong)&f1c100s_ccu_desc },
--
2.46.2
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