Add initial clock driver for Allwinner A31.
- Implement USB ahb1 and USB clocks via ccu_clk_map descriptor for A31, so it can accessed in common clk enable and disable functions from clk_sunxi.c - Implement USB ahb1 and USB resets via ccu_reset_map descriptor for A31, so it can accessed in common reset deassert and assert functions from reset-sunxi.c
Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- drivers/clk/sunxi/Kconfig | 7 +++ drivers/clk/sunxi/Makefile | 1 + drivers/clk/sunxi/clk_a31.c | 86 +++++++++++++++++++++++++++++++++++++ 3 files changed, 94 insertions(+) create mode 100644 drivers/clk/sunxi/clk_a31.c
diff --git a/drivers/clk/sunxi/Kconfig b/drivers/clk/sunxi/Kconfig index b228c2fa3a..535b0dc02c 100644 --- a/drivers/clk/sunxi/Kconfig +++ b/drivers/clk/sunxi/Kconfig @@ -23,6 +23,13 @@ config CLK_SUN5I_A10S This enables common clock driver support for platforms based on Allwinner A10s/A13 SoC.
+config CLK_SUN6I_A31 + bool "Clock driver for Allwinner A31/A31s" + default MACH_SUN6I + help + This enables common clock driver support for platforms based + on Allwinner A31/A31s 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 466d4b79d6..3cf0071b0c 100644 --- a/drivers/clk/sunxi/Makefile +++ b/drivers/clk/sunxi/Makefile @@ -8,5 +8,6 @@ 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_SUN6I_A31) += clk_a31.o obj-$(CONFIG_CLK_SUN8I_H3) += clk_h3.o obj-$(CONFIG_CLK_SUN50I_A64) += clk_a64.o diff --git a/drivers/clk/sunxi/clk_a31.c b/drivers/clk/sunxi/clk_a31.c new file mode 100644 index 0000000000..c6d82be120 --- /dev/null +++ b/drivers/clk/sunxi/clk_a31.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (C) 2018 Amarula Solutions B.V. + * 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/sun6i-a31-ccu.h> +#include <dt-bindings/reset/sun6i-a31-ccu.h> + +static struct ccu_clk_map a31_clks[] = { + [CLK_AHB1_OTG] = { 0x060, BIT(24), NULL }, + [CLK_AHB1_EHCI0] = { 0x060, BIT(26), NULL }, + [CLK_AHB1_EHCI1] = { 0x060, BIT(27), NULL }, + [CLK_AHB1_OHCI0] = { 0x060, BIT(29), NULL }, + [CLK_AHB1_OHCI1] = { 0x060, BIT(30), NULL }, + [CLK_AHB1_OHCI2] = { 0x060, BIT(31), NULL }, + + [CLK_USB_PHY0] = { 0x0cc, BIT(8), NULL }, + [CLK_USB_PHY1] = { 0x0cc, BIT(9), NULL }, + [CLK_USB_PHY2] = { 0x0cc, BIT(10), NULL }, + [CLK_USB_OHCI0] = { 0x0cc, BIT(16), NULL }, + [CLK_USB_OHCI1] = { 0x0cc, BIT(17), NULL }, + [CLK_USB_OHCI2] = { 0x0cc, BIT(18), NULL }, +}; + +static struct ccu_reset_map a31_resets[] = { + [RST_USB_PHY0] = { 0x0cc, BIT(0) }, + [RST_USB_PHY1] = { 0x0cc, BIT(1) }, + [RST_USB_PHY2] = { 0x0cc, BIT(2) }, + + [RST_AHB1_OTG] = { 0x2c0, BIT(24) }, + [RST_AHB1_EHCI0] = { 0x2c0, BIT(26) }, + [RST_AHB1_EHCI1] = { 0x2c0, BIT(27) }, + [RST_AHB1_OHCI0] = { 0x2c0, BIT(29) }, + [RST_AHB1_OHCI1] = { 0x2c0, BIT(30) }, + [RST_AHB1_OHCI2] = { 0x2c0, BIT(31) }, +}; + +static const struct ccu_desc sun6i_a31_ccu_desc = { + .clks = a31_clks, + .num_clks = ARRAY_SIZE(a31_clks), + + .resets = a31_resets, + .num_resets = ARRAY_SIZE(a31_resets), +}; + +static int a31_clk_probe(struct udevice *dev) +{ + struct sunxi_clk_priv *priv = dev_get_priv(dev); + + priv->base = dev_read_addr_ptr(dev); + if (!priv->base) + return -ENOMEM; + + priv->desc = (const struct ccu_desc *)dev_get_driver_data(dev); + if (!priv->desc) + return -EINVAL; + + return 0; +} + +static int a31_clk_bind(struct udevice *dev) +{ + return sunxi_reset_bind(dev, 56); +} + +static const struct udevice_id a31_clk_ids[] = { + { .compatible = "allwinner,sun6i-a31-ccu", + .data = (ulong)&sun6i_a31_ccu_desc }, + { } +}; + +U_BOOT_DRIVER(clk_sun6i_a31) = { + .name = "sun6i_a31_ccu", + .id = UCLASS_CLK, + .of_match = a31_clk_ids, + .priv_auto_alloc_size = sizeof(struct sunxi_clk_priv), + .ops = &sunxi_clk_ops, + .probe = a31_clk_probe, + .bind = a31_clk_bind, +};