mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-06 21:24:29 +00:00
cd93d625fd
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
|
|
*/
|
|
|
|
#include <asm/io.h>
|
|
#include <clk.h>
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <dm/device_compat.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/err.h>
|
|
|
|
#define UFS_SS_CTRL 0x4
|
|
#define UFS_SS_RST_N_PCS BIT(0)
|
|
#define UFS_SS_CLK_26MHZ BIT(4)
|
|
|
|
static int ti_j721e_ufs_probe(struct udevice *dev)
|
|
{
|
|
void __iomem *base;
|
|
unsigned int clock;
|
|
struct clk clk;
|
|
u32 reg = 0;
|
|
int ret;
|
|
|
|
ret = clk_get_by_index(dev, 0, &clk);
|
|
if (ret) {
|
|
dev_err(dev, "failed to get M-PHY clock\n");
|
|
return ret;
|
|
}
|
|
|
|
clock = clk_get_rate(&clk);
|
|
if (IS_ERR_VALUE(clock)) {
|
|
dev_err(dev, "failed to get rate\n");
|
|
return ret;
|
|
}
|
|
|
|
base = dev_remap_addr_index(dev, 0);
|
|
|
|
if (clock == 26000000)
|
|
reg |= UFS_SS_CLK_26MHZ;
|
|
/* Take UFS slave device out of reset */
|
|
reg |= UFS_SS_RST_N_PCS;
|
|
writel(reg, base + UFS_SS_CTRL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ti_j721e_ufs_remove(struct udevice *dev)
|
|
{
|
|
void __iomem *base = dev_remap_addr_index(dev, 0);
|
|
u32 reg = readl(base + UFS_SS_CTRL);
|
|
|
|
reg &= ~UFS_SS_RST_N_PCS;
|
|
writel(reg, base + UFS_SS_CTRL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id ti_j721e_ufs_ids[] = {
|
|
{
|
|
.compatible = "ti,j721e-ufs",
|
|
},
|
|
{},
|
|
};
|
|
|
|
U_BOOT_DRIVER(ti_j721e_ufs) = {
|
|
.name = "ti-j721e-ufs",
|
|
.id = UCLASS_MISC,
|
|
.of_match = ti_j721e_ufs_ids,
|
|
.probe = ti_j721e_ufs_probe,
|
|
.remove = ti_j721e_ufs_remove,
|
|
.flags = DM_FLAG_OS_PREPARE,
|
|
};
|