Add initial clock driver for Allwinner H3/H5.
- Implement USB bus and USB clocks via ccu_clk_map descriptor for H3/H5, so it can accessed in common clk enable and disable functions from clk_sunxi.c - Implement USB bus and USB resets via ccu_reset_map descriptor for H3/H5, 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_h3.c | 97 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 105 insertions(+) create mode 100644 drivers/clk/sunxi/clk_h3.c
diff --git a/drivers/clk/sunxi/Kconfig b/drivers/clk/sunxi/Kconfig index 041d711e58..c3713bbac2 100644 --- a/drivers/clk/sunxi/Kconfig +++ b/drivers/clk/sunxi/Kconfig @@ -9,6 +9,13 @@ config CLK_SUNXI
if CLK_SUNXI
+config CLK_SUN8I_H3 + bool "Clock driver for Allwinner H3/H5" + default MACH_SUNXI_H3_H5 + help + This enables common clock driver support for platforms based + on Allwinner H3/H5 SoC. + config CLK_SUN50I_A64 bool "Clock driver for Allwinner A64" default MACH_SUN50I diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile index fb20d28333..dec49f27a1 100644 --- a/drivers/clk/sunxi/Makefile +++ b/drivers/clk/sunxi/Makefile @@ -6,4 +6,5 @@
obj-$(CONFIG_CLK_SUNXI) += clk_sunxi.o
+obj-$(CONFIG_CLK_SUN8I_H3) += clk_h3.o obj-$(CONFIG_CLK_SUN50I_A64) += clk_a64.o diff --git a/drivers/clk/sunxi/clk_h3.c b/drivers/clk/sunxi/clk_h3.c new file mode 100644 index 0000000000..0b7f4947dd --- /dev/null +++ b/drivers/clk/sunxi/clk_h3.c @@ -0,0 +1,97 @@ +// 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/sun8i-h3-ccu.h> +#include <dt-bindings/reset/sun8i-h3-ccu.h> + +static struct ccu_clk_map h3_clks[] = { + [CLK_BUS_OTG] = { 0x060, BIT(23), NULL }, + [CLK_BUS_EHCI0] = { 0x060, BIT(24), NULL }, + [CLK_BUS_EHCI1] = { 0x060, BIT(25), NULL }, + [CLK_BUS_EHCI2] = { 0x060, BIT(26), NULL }, + [CLK_BUS_EHCI3] = { 0x060, BIT(27), NULL }, + [CLK_BUS_OHCI0] = { 0x060, BIT(28), NULL }, + [CLK_BUS_OHCI1] = { 0x060, BIT(29), NULL }, + [CLK_BUS_OHCI2] = { 0x060, BIT(30), NULL }, + [CLK_BUS_OHCI3] = { 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_PHY3] = { 0x0cc, BIT(11), NULL }, + [CLK_USB_OHCI0] = { 0x0cc, BIT(16), NULL }, + [CLK_USB_OHCI1] = { 0x0cc, BIT(17), NULL }, + [CLK_USB_OHCI2] = { 0x0cc, BIT(18), NULL }, + [CLK_USB_OHCI3] = { 0x0cc, BIT(19), NULL }, +}; + +static struct ccu_reset_map h3_resets[] = { + [RST_USB_PHY0] = { 0x0cc, BIT(0) }, + [RST_USB_PHY1] = { 0x0cc, BIT(1) }, + [RST_USB_PHY2] = { 0x0cc, BIT(2) }, + [RST_USB_PHY3] = { 0x0cc, BIT(3) }, + + [RST_BUS_OTG] = { 0x2c0, BIT(23) }, + [RST_BUS_EHCI0] = { 0x2c0, BIT(24) }, + [RST_BUS_EHCI1] = { 0x2c0, BIT(25) }, + [RST_BUS_EHCI2] = { 0x2c0, BIT(26) }, + [RST_BUS_EHCI3] = { 0x2c0, BIT(27) }, + [RST_BUS_OHCI0] = { 0x2c0, BIT(28) }, + [RST_BUS_OHCI1] = { 0x2c0, BIT(29) }, + [RST_BUS_OHCI2] = { 0x2c0, BIT(30) }, + [RST_BUS_OHCI3] = { 0x2c0, BIT(31) }, +}; + +static const struct ccu_desc sun8i_h3_ccu_desc = { + .clks = h3_clks, + .num_clks = ARRAY_SIZE(h3_clks), + + .resets = h3_resets, + .num_resets = ARRAY_SIZE(h3_resets), +}; + +static int h3_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 h3_clk_bind(struct udevice *dev) +{ + return sunxi_reset_bind(dev, 53); +} + +static const struct udevice_id h3_clk_ids[] = { + { .compatible = "allwinner,sun8i-h3-ccu", + .data = (ulong)&sun8i_h3_ccu_desc }, + { .compatible = "allwinner,sun50i-h5-ccu", + .data = (ulong)&sun8i_h3_ccu_desc }, + { } +}; + +U_BOOT_DRIVER(clk_sun8i_h3) = { + .name = "sun8i_h3_ccu", + .id = UCLASS_CLK, + .of_match = h3_clk_ids, + .priv_auto_alloc_size = sizeof(struct sunxi_clk_priv), + .ops = &sunxi_clk_ops, + .probe = h3_clk_probe, + .bind = h3_clk_bind, +};