brain-hackers_pepepper-mirror/u-boot-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-09-29 08:00:26 +09:00
Code Issues Projects Releases Wiki Activity

clk: sunxi: Add Allwinner H6 CLK driver

Browse Source 
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>
This commit is contained in:
Jagan Teki 2018-12-31 15:35:01 +05:30
parent 8606f960d4
commit 337fcdc06b
3 changed files with 61 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/clk/sunxi/Kconfig
View File

@ -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

1
drivers/clk/sunxi/Makefile
View File

@ -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

53
drivers/clk/sunxi/clk_h6.c Normal file
View File

@ -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,
};