luckfox-pico-sdk/sysdrv/source/uboot/u-boot/drivers/ufs/ti-j721e-ufs.c
luckfox-eng29 8f34c2760d project:build.sh: Added fastboot support; custom modifications to U-Boot and kernel implemented using patches.
project:cfg:BoardConfig_IPC: Added fastboot BoardConfig file and firmware post-scripts, distinguishing between
the BoardConfigs for Luckfox Pico Pro and Luckfox Pico Max. project:app: Added fastboot_client and rk_smart_door
for quick boot applications; updated rkipc app to adapt to the latest media library. media:samples: Added more
usage examples. media:rockit: Fixed bugs; removed support for retrieving data frames from VPSS. media:isp:
Updated rkaiq library and related tools to support connection to RKISP_Tuner. sysdrv:Makefile: Added support for
compiling drv_ko on Luckfox Pico Ultra W using Ubuntu; added support for custom root filesystem.
sysdrv:tools:board: Updated Buildroot optional mirror sources, updated some software versions, and stored device
tree files and configuration files that undergo multiple modifications for U-Boot and kernel separately.
sysdrv:source:mcu: Used RISC-V MCU SDK with RT-Thread system, mainly for initializing camera AE during quick
boot. sysdrv:source:uboot: Added support for fastboot; added high baud rate DDR bin for serial firmware upgrades.
sysdrv:source:kernel: Upgraded to version 5.10.160; increased NPU frequency for RV1106G3; added support for
fastboot.

Signed-off-by: luckfox-eng29 <eng29@luckfox.com>
2024-10-14 09:47:04 +08:00

75 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,
};