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clk: sunxi: Add Allwinner A31 CLK driver

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Add initial clock driver for Allwinner A31.

- Implement USB ahb1 and USB clocks via ccu_clk_gate table
  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 table
  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>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
This commit is contained in:
Jagan Teki 2018-08-02 23:15:34 +05:30
parent c8e743c1e8
commit 4927e2e8d3
3 changed files with 76 additions and 0 deletions
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7
drivers/clk/sunxi/Kconfig
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@ -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

1
drivers/clk/sunxi/Makefile
View File

@ -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

68
drivers/clk/sunxi/clk_a31.c Normal file
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@ -0,0 +1,68 @@
// 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_gate a31_gates[] = {
[CLK_AHB1_OTG] = GATE(0x060, BIT(24)),
[CLK_AHB1_EHCI0] = GATE(0x060, BIT(26)),
[CLK_AHB1_EHCI1] = GATE(0x060, BIT(27)),
[CLK_AHB1_OHCI0] = GATE(0x060, BIT(29)),
[CLK_AHB1_OHCI1] = GATE(0x060, BIT(30)),
[CLK_AHB1_OHCI2] = GATE(0x060, BIT(31)),
[CLK_USB_PHY0] = GATE(0x0cc, BIT(8)),
[CLK_USB_PHY1] = GATE(0x0cc, BIT(9)),
[CLK_USB_PHY2] = GATE(0x0cc, BIT(10)),
[CLK_USB_OHCI0] = GATE(0x0cc, BIT(16)),
[CLK_USB_OHCI1] = GATE(0x0cc, BIT(17)),
[CLK_USB_OHCI2] = GATE(0x0cc, BIT(18)),
};
static struct ccu_reset a31_resets[] = {
[RST_USB_PHY0] = RESET(0x0cc, BIT(0)),
[RST_USB_PHY1] = RESET(0x0cc, BIT(1)),
[RST_USB_PHY2] = RESET(0x0cc, BIT(2)),
[RST_AHB1_OTG] = RESET(0x2c0, BIT(24)),
[RST_AHB1_EHCI0] = RESET(0x2c0, BIT(26)),
[RST_AHB1_EHCI1] = RESET(0x2c0, BIT(27)),
[RST_AHB1_OHCI0] = RESET(0x2c0, BIT(29)),
[RST_AHB1_OHCI1] = RESET(0x2c0, BIT(30)),
[RST_AHB1_OHCI2] = RESET(0x2c0, BIT(31)),
};
static const struct ccu_desc a31_ccu_desc = {
.gates = a31_gates,
.resets = a31_resets,
};
static int a31_clk_bind(struct udevice *dev)
{
return sunxi_reset_bind(dev, ARRAY_SIZE(a31_resets));
}
static const struct udevice_id a31_clk_ids[] = {
{ .compatible = "allwinner,sun6i-a31-ccu",
.data = (ulong)&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 ccu_priv),
.ops = &sunxi_clk_ops,
.probe = sunxi_clk_probe,
.bind = a31_clk_bind,
};