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clk: sunxi: Add Allwinner A83T CLK driver

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Add initial clock driver for Allwinner A83T.

- Implement USB bus and USB clocks via ccu_clk_gate table
  for A83T, so it can accessed in common clk enable and
  disable functions from clk_sunxi.c
- Implement USB bus and USB resets via ccu_reset table
  for A83T, so it can accessed in common reset deassert
  and assert functions from reset-sunxi.c

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
This commit is contained in:
Jagan Teki 2018-08-02 23:33:55 +05:30
parent 3ab029368a
commit 03d87f5909
3 changed files with 71 additions and 0 deletions
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7
drivers/clk/sunxi/Kconfig
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@ -37,6 +37,13 @@ config CLK_SUN8I_A23
This enables common clock driver support for platforms based
on Allwinner A23/A33 SoC.
config CLK_SUN8I_A83T
bool "Clock driver for Allwinner A83T"
default MACH_SUN8I_A83T
help
This enables common clock driver support for platforms based
on Allwinner A83T SoC.
config CLK_SUN8I_H3
bool "Clock driver for Allwinner H3/H5"
default MACH_SUNXI_H3_H5

1
drivers/clk/sunxi/Makefile
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@ -10,5 +10,6 @@ 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_A23) += clk_a23.o
obj-$(CONFIG_CLK_SUN8I_A83T) += clk_a83t.o
obj-$(CONFIG_CLK_SUN8I_H3) += clk_h3.o
obj-$(CONFIG_CLK_SUN50I_A64) += clk_a64.o

63
drivers/clk/sunxi/clk_a83t.c Normal file
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@ -0,0 +1,63 @@
// 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-a83t-ccu.h>
#include <dt-bindings/reset/sun8i-a83t-ccu.h>
static struct ccu_clk_gate a83t_gates[] = {
[CLK_BUS_OTG] = GATE(0x060, BIT(24)),
[CLK_BUS_EHCI0] = GATE(0x060, BIT(26)),
[CLK_BUS_EHCI1] = GATE(0x060, BIT(27)),
[CLK_BUS_OHCI0] = GATE(0x060, BIT(29)),
[CLK_USB_PHY0] = GATE(0x0cc, BIT(8)),
[CLK_USB_PHY1] = GATE(0x0cc, BIT(9)),
[CLK_USB_HSIC] = GATE(0x0cc, BIT(10)),
[CLK_USB_HSIC_12M] = GATE(0x0cc, BIT(11)),
[CLK_USB_OHCI0] = GATE(0x0cc, BIT(16)),
};
static struct ccu_reset a83t_resets[] = {
[RST_USB_PHY0] = RESET(0x0cc, BIT(0)),
[RST_USB_PHY1] = RESET(0x0cc, BIT(1)),
[RST_USB_HSIC] = RESET(0x0cc, BIT(2)),
[RST_BUS_OTG] = RESET(0x2c0, BIT(24)),
[RST_BUS_EHCI0] = RESET(0x2c0, BIT(26)),
[RST_BUS_EHCI1] = RESET(0x2c0, BIT(27)),
[RST_BUS_OHCI0] = RESET(0x2c0, BIT(29)),
};
static const struct ccu_desc a83t_ccu_desc = {
.gates = a83t_gates,
.resets = a83t_resets,
};
static int a83t_clk_bind(struct udevice *dev)
{
return sunxi_reset_bind(dev, ARRAY_SIZE(a83t_resets));
}
static const struct udevice_id a83t_clk_ids[] = {
{ .compatible = "allwinner,sun8i-a83t-ccu",
.data = (ulong)&a83t_ccu_desc },
{ }
};
U_BOOT_DRIVER(clk_sun8i_a83t) = {
.name = "sun8i_a83t_ccu",
.id = UCLASS_CLK,
.of_match = a83t_clk_ids,
.priv_auto_alloc_size = sizeof(struct ccu_priv),
.ops = &sunxi_clk_ops,
.probe = sunxi_clk_probe,
.bind = a83t_clk_bind,
};