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author | Jagan Teki <jagan@amarulasolutions.com> | 2018-12-31 15:35:01 +0530 |
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committer | Jagan Teki <jagan@amarulasolutions.com> | 2019-01-18 22:19:09 +0530 |
commit | 337fcdc06bad484d3af08e0fd0876e22a09358ce (patch) | |
tree | df491f67132d0a4ac89e6e71bebf9237098b0440 /drivers/clk | |
parent | 8606f960d4e40f1fbd7fb7e1be30c924dbb9dba0 (diff) | |
download | u-boot-337fcdc06bad484d3af08e0fd0876e22a09358ce.zip u-boot-337fcdc06bad484d3af08e0fd0876e22a09358ce.tar.gz u-boot-337fcdc06bad484d3af08e0fd0876e22a09358ce.tar.bz2 |
clk: sunxi: Add Allwinner H6 CLK driver
Add initial clock driver for Allwinner H6.
- Implement UART bus clocks via ccu_clk_gate table for
H6, so it can accessed in common clk enable and disable
functions from clk_sunxi.c
- Implement UART bus resets via ccu_reset table for H6,
so it can accessed in common reset deassert and assert
functions from reset-sunxi.c
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Diffstat (limited to 'drivers/clk')
-rw-r--r-- | drivers/clk/sunxi/Kconfig | 7 | ||||
-rw-r--r-- | drivers/clk/sunxi/Makefile | 1 | ||||
-rw-r--r-- | drivers/clk/sunxi/clk_h6.c | 53 |
3 files changed, 61 insertions, 0 deletions
diff --git a/drivers/clk/sunxi/Kconfig b/drivers/clk/sunxi/Kconfig index a6f84e9..cb11c7c 100644 --- a/drivers/clk/sunxi/Kconfig +++ b/drivers/clk/sunxi/Kconfig @@ -65,6 +65,13 @@ config CLK_SUN8I_H3 This enables common clock driver support for platforms based on Allwinner H3/H5 SoC. +config CLK_SUN50I_H6 + bool "Clock driver for Allwinner H6" + default MACH_SUN50I_H6 + help + This enables common clock driver support for platforms based + on Allwinner H6 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 fbd4352..794aa24 100644 --- a/drivers/clk/sunxi/Makefile +++ b/drivers/clk/sunxi/Makefile @@ -14,4 +14,5 @@ obj-$(CONFIG_CLK_SUN8I_A83T) += clk_a83t.o obj-$(CONFIG_CLK_SUN8I_R40) += clk_r40.o obj-$(CONFIG_CLK_SUN8I_V3S) += clk_v3s.o obj-$(CONFIG_CLK_SUN8I_H3) += clk_h3.o +obj-$(CONFIG_CLK_SUN50I_H6) += clk_h6.o obj-$(CONFIG_CLK_SUN50I_A64) += clk_a64.o diff --git a/drivers/clk/sunxi/clk_h6.c b/drivers/clk/sunxi/clk_h6.c new file mode 100644 index 0000000..0da3a40 --- /dev/null +++ b/drivers/clk/sunxi/clk_h6.c @@ -0,0 +1,53 @@ +// 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/sun50i-h6-ccu.h> +#include <dt-bindings/reset/sun50i-h6-ccu.h> + +static struct ccu_clk_gate h6_gates[] = { + [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)), +}; + +static struct ccu_reset h6_resets[] = { + [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)), +}; + +static const struct ccu_desc h6_ccu_desc = { + .gates = h6_gates, + .resets = h6_resets, +}; + +static int h6_clk_bind(struct udevice *dev) +{ + return sunxi_reset_bind(dev, ARRAY_SIZE(h6_resets)); +} + +static const struct udevice_id h6_ccu_ids[] = { + { .compatible = "allwinner,sun50i-h6-ccu", + .data = (ulong)&h6_ccu_desc }, + { } +}; + +U_BOOT_DRIVER(clk_sun50i_h6) = { + .name = "sun50i_h6_ccu", + .id = UCLASS_CLK, + .of_match = h6_ccu_ids, + .priv_auto_alloc_size = sizeof(struct ccu_priv), + .ops = &sunxi_clk_ops, + .probe = sunxi_clk_probe, + .bind = h6_clk_bind, +}; |