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u-boot/drivers/clk/sunxi/clk_sunxi.c
Samuel Holland b9a91b98e8 clk: sunxi: Add support for the D1 CCU 
Since the D1 CCU binding is defined, we can add support for its
gates/resets, following the pattern of the existing drivers.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Sean Anderson <seanga2@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2023-10-22 23:41:51 +01:00

236 lines
6.0 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
/*
* 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 <log.h>
#include <reset.h>
#include <asm/io.h>
#include <clk/sunxi.h>
#include <dm/device-internal.h>
#include <linux/bitops.h>
#include <linux/log2.h>
extern U_BOOT_DRIVER(sunxi_reset);
static const struct ccu_clk_gate *plat_to_gate(struct ccu_plat *plat,
unsigned long id)
{
if (id >= plat->desc->num_gates)
return NULL;
return &plat->desc->gates[id];
}
static int sunxi_set_gate(struct clk *clk, bool on)
{
struct ccu_plat *plat = dev_get_plat(clk->dev);
const struct ccu_clk_gate *gate = plat_to_gate(plat, clk->id);
u32 reg;
if (gate && (gate->flags & CCU_CLK_F_DUMMY_GATE))
return 0;
if (!gate || !(gate->flags & CCU_CLK_F_IS_VALID)) {
printf("%s: (CLK#%ld) unhandled\n", __func__, clk->id);
return 0;
}
debug("%s: (CLK#%ld) off#0x%x, BIT(%d)\n", __func__,
clk->id, gate->off, ilog2(gate->bit));
reg = readl(plat->base + gate->off);
if (on)
reg |= gate->bit;
else
reg &= ~gate->bit;
writel(reg, plat->base + gate->off);
return 0;
}
static int sunxi_clk_enable(struct clk *clk)
{
return sunxi_set_gate(clk, true);
}
static int sunxi_clk_disable(struct clk *clk)
{
return sunxi_set_gate(clk, false);
}
struct clk_ops sunxi_clk_ops = {
.enable = sunxi_clk_enable,
.disable = sunxi_clk_disable,
};
static int sunxi_clk_bind(struct udevice *dev)
{
/* Reuse the platform data for the reset driver. */
return device_bind(dev, DM_DRIVER_REF(sunxi_reset), "reset",
dev_get_plat(dev), dev_ofnode(dev), NULL);
}
static int sunxi_clk_probe(struct udevice *dev)
{
struct clk_bulk clk_bulk;
struct reset_ctl_bulk rst_bulk;
int ret;
ret = clk_get_bulk(dev, &clk_bulk);
if (!ret)
clk_enable_bulk(&clk_bulk);
ret = reset_get_bulk(dev, &rst_bulk);
if (!ret)
reset_deassert_bulk(&rst_bulk);
return 0;
}
static int sunxi_clk_of_to_plat(struct udevice *dev)
{
struct ccu_plat *plat = dev_get_plat(dev);
plat->base = dev_read_addr_ptr(dev);
if (!plat->base)
return -ENOMEM;
plat->desc = (const struct ccu_desc *)dev_get_driver_data(dev);
if (!plat->desc)
return -EINVAL;
return 0;
}
extern const struct ccu_desc a10_ccu_desc;
extern const struct ccu_desc a10s_ccu_desc;
extern const struct ccu_desc a23_ccu_desc;
extern const struct ccu_desc a31_ccu_desc;
extern const struct ccu_desc a31_r_ccu_desc;
extern const struct ccu_desc a64_ccu_desc;
extern const struct ccu_desc a80_ccu_desc;
extern const struct ccu_desc a80_mmc_clk_desc;
extern const struct ccu_desc a83t_ccu_desc;
extern const struct ccu_desc d1_ccu_desc;
extern const struct ccu_desc f1c100s_ccu_desc;
extern const struct ccu_desc h3_ccu_desc;
extern const struct ccu_desc h6_ccu_desc;
extern const struct ccu_desc h616_ccu_desc;
extern const struct ccu_desc h6_r_ccu_desc;
extern const struct ccu_desc r40_ccu_desc;
extern const struct ccu_desc v3s_ccu_desc;
static const struct udevice_id sunxi_clk_ids[] = {
#ifdef CONFIG_CLK_SUN4I_A10
{ .compatible = "allwinner,sun4i-a10-ccu",
.data = (ulong)&a10_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN5I_A10S
{ .compatible = "allwinner,sun5i-a10s-ccu",
.data = (ulong)&a10s_ccu_desc },
{ .compatible = "allwinner,sun5i-a13-ccu",
.data = (ulong)&a10s_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN6I_A31
{ .compatible = "allwinner,sun6i-a31-ccu",
.data = (ulong)&a31_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN4I_A10
{ .compatible = "allwinner,sun7i-a20-ccu",
.data = (ulong)&a10_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN8I_A23
{ .compatible = "allwinner,sun8i-a23-ccu",
.data = (ulong)&a23_ccu_desc },
{ .compatible = "allwinner,sun8i-a33-ccu",
.data = (ulong)&a23_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN8I_A83T
{ .compatible = "allwinner,sun8i-a83t-ccu",
.data = (ulong)&a83t_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN6I_A31_R
{ .compatible = "allwinner,sun8i-a83t-r-ccu",
.data = (ulong)&a31_r_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN8I_H3
{ .compatible = "allwinner,sun8i-h3-ccu",
.data = (ulong)&h3_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN6I_A31_R
{ .compatible = "allwinner,sun8i-h3-r-ccu",
.data = (ulong)&a31_r_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN8I_R40
{ .compatible = "allwinner,sun8i-r40-ccu",
.data = (ulong)&r40_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN8I_V3S
{ .compatible = "allwinner,sun8i-v3-ccu",
.data = (ulong)&v3s_ccu_desc },
{ .compatible = "allwinner,sun8i-v3s-ccu",
.data = (ulong)&v3s_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN9I_A80
{ .compatible = "allwinner,sun9i-a80-ccu",
.data = (ulong)&a80_ccu_desc },
{ .compatible = "allwinner,sun9i-a80-mmc-config-clk",
.data = (ulong)&a80_mmc_clk_desc },
#endif
#ifdef CONFIG_CLK_SUN50I_A64
{ .compatible = "allwinner,sun50i-a64-ccu",
.data = (ulong)&a64_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN6I_A31_R
{ .compatible = "allwinner,sun50i-a64-r-ccu",
.data = (ulong)&a31_r_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN8I_H3
{ .compatible = "allwinner,sun50i-h5-ccu",
.data = (ulong)&h3_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN20I_D1
{ .compatible = "allwinner,sun20i-d1-ccu",
.data = (ulong)&d1_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN50I_H6
{ .compatible = "allwinner,sun50i-h6-ccu",
.data = (ulong)&h6_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN50I_H6_R
{ .compatible = "allwinner,sun50i-h6-r-ccu",
.data = (ulong)&h6_r_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN50I_H616
{ .compatible = "allwinner,sun50i-h616-ccu",
.data = (ulong)&h616_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUN50I_H6_R
{ .compatible = "allwinner,sun50i-h616-r-ccu",
.data = (ulong)&h6_r_ccu_desc },
#endif
#ifdef CONFIG_CLK_SUNIV_F1C100S
{ .compatible = "allwinner,suniv-f1c100s-ccu",
.data = (ulong)&f1c100s_ccu_desc },
#endif
{ }
};
U_BOOT_DRIVER(sunxi_clk) = {
.name = "sunxi_clk",
.id = UCLASS_CLK,
.of_match = sunxi_clk_ids,
.bind = sunxi_clk_bind,
.probe = sunxi_clk_probe,
.of_to_plat = sunxi_clk_of_to_plat,
.plat_auto = sizeof(struct ccu_plat),
.ops = &sunxi_clk_ops,
};
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