u-boot/drivers/clk/sunxi/clk_a23.c
Samuel Holland c61897bf02 clk: sunxi: Add support for I2C gates/resets
Currently, the I2C clocks are configured in the sunxi board code. Add
the I2C clocks to the DM clock driver so they can be enabled from the
DM I2C driver using the normal uclass methods.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2021-10-11 10:46:44 +01:00

95 lines
2.8 KiB
C

// 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 <clk/sunxi.h>
#include <dt-bindings/clock/sun8i-a23-a33-ccu.h>
#include <dt-bindings/reset/sun8i-a23-a33-ccu.h>
#include <linux/bitops.h>
static struct ccu_clk_gate a23_gates[] = {
[CLK_BUS_MMC0] = GATE(0x060, BIT(8)),
[CLK_BUS_MMC1] = GATE(0x060, BIT(9)),
[CLK_BUS_MMC2] = GATE(0x060, BIT(10)),
[CLK_BUS_SPI0] = GATE(0x060, BIT(20)),
[CLK_BUS_SPI1] = GATE(0x060, BIT(21)),
[CLK_BUS_OTG] = GATE(0x060, BIT(24)),
[CLK_BUS_EHCI] = GATE(0x060, BIT(26)),
[CLK_BUS_OHCI] = GATE(0x060, BIT(29)),
[CLK_BUS_I2C0] = GATE(0x06c, BIT(0)),
[CLK_BUS_I2C1] = GATE(0x06c, BIT(1)),
[CLK_BUS_I2C2] = GATE(0x06c, BIT(2)),
[CLK_BUS_UART0] = GATE(0x06c, BIT(16)),
[CLK_BUS_UART1] = GATE(0x06c, BIT(17)),
[CLK_BUS_UART2] = GATE(0x06c, BIT(18)),
[CLK_BUS_UART3] = GATE(0x06c, BIT(19)),
[CLK_BUS_UART4] = GATE(0x06c, BIT(20)),
[CLK_SPI0] = GATE(0x0a0, BIT(31)),
[CLK_SPI1] = GATE(0x0a4, BIT(31)),
[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_OHCI] = GATE(0x0cc, BIT(16)),
};
static struct ccu_reset a23_resets[] = {
[RST_USB_PHY0] = RESET(0x0cc, BIT(0)),
[RST_USB_PHY1] = RESET(0x0cc, BIT(1)),
[RST_USB_HSIC] = RESET(0x0cc, BIT(2)),
[RST_BUS_MMC0] = RESET(0x2c0, BIT(8)),
[RST_BUS_MMC1] = RESET(0x2c0, BIT(9)),
[RST_BUS_MMC2] = RESET(0x2c0, BIT(10)),
[RST_BUS_SPI0] = RESET(0x2c0, BIT(20)),
[RST_BUS_SPI1] = RESET(0x2c0, BIT(21)),
[RST_BUS_OTG] = RESET(0x2c0, BIT(24)),
[RST_BUS_EHCI] = RESET(0x2c0, BIT(26)),
[RST_BUS_OHCI] = RESET(0x2c0, BIT(29)),
[RST_BUS_I2C0] = RESET(0x2d8, BIT(0)),
[RST_BUS_I2C1] = RESET(0x2d8, BIT(1)),
[RST_BUS_I2C2] = RESET(0x2d8, BIT(2)),
[RST_BUS_UART0] = RESET(0x2d8, BIT(16)),
[RST_BUS_UART1] = RESET(0x2d8, BIT(17)),
[RST_BUS_UART2] = RESET(0x2d8, BIT(18)),
[RST_BUS_UART3] = RESET(0x2d8, BIT(19)),
[RST_BUS_UART4] = RESET(0x2d8, BIT(20)),
};
static const struct ccu_desc a23_ccu_desc = {
.gates = a23_gates,
.resets = a23_resets,
};
static int a23_clk_bind(struct udevice *dev)
{
return sunxi_reset_bind(dev, ARRAY_SIZE(a23_resets));
}
static const struct udevice_id a23_clk_ids[] = {
{ .compatible = "allwinner,sun8i-a23-ccu",
.data = (ulong)&a23_ccu_desc },
{ .compatible = "allwinner,sun8i-a33-ccu",
.data = (ulong)&a23_ccu_desc },
{ }
};
U_BOOT_DRIVER(clk_sun8i_a23) = {
.name = "sun8i_a23_ccu",
.id = UCLASS_CLK,
.of_match = a23_clk_ids,
.priv_auto = sizeof(struct ccu_priv),
.ops = &sunxi_clk_ops,
.probe = sunxi_clk_probe,
.bind = a23_clk_bind,
};