Commit c21f5854 authored by Masahiro Yamada's avatar Masahiro Yamada

ARM: uniphier: deassert RST_n of eMMC device for LD11/LD20

For LD11 and LD20 SoCs, the RST_n pin is asserted by default.  If
the EXT_CSD[162], bit[1:0] (RST_n_ENABLE) is fused, the eMMC device
would stay in the reset state until its RST_n pin is deasserted by
software.

Currently, this is cared by an ad-hoc way because the eMMC hardware
reset provider is not supported in U-Boot for now.  This code should
be re-written once the "mmc-pwrseq-emmc" binding is supported.
Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
parent 04f3da39
......@@ -165,6 +165,7 @@ static const struct uniphier_initdata uniphier_initdata[] = {
.nand_2cs = false,
.sbc_init = uniphier_ld11_sbc_init,
.pll_init = uniphier_ld20_pll_init,
.clk_init = uniphier_ld20_clk_init,
.misc_init = uniphier_ld20_misc_init,
},
#endif
......
......@@ -24,7 +24,7 @@ obj-$(CONFIG_ARCH_UNIPHIER_PRO5) += clk-pro5.o
obj-$(CONFIG_ARCH_UNIPHIER_PXS2) += clk-pxs2.o
obj-$(CONFIG_ARCH_UNIPHIER_LD6B) += clk-pxs2.o
obj-$(CONFIG_ARCH_UNIPHIER_LD11) += clk-ld11.o pll-ld11.o
obj-$(CONFIG_ARCH_UNIPHIER_LD20) += pll-ld20.o
obj-$(CONFIG_ARCH_UNIPHIER_LD20) += clk-ld20.o pll-ld20.o
obj-$(CONFIG_ARCH_UNIPHIER_PXS3) += pll-pxs3.o
endif
......
......@@ -13,6 +13,8 @@
#include "../sc64-regs.h"
#include "../sg-regs.h"
#define SDCTRL_EMMC_HW_RESET 0x59810280
void uniphier_ld11_clk_init(void)
{
/* if booted from a device other than USB, without stand-by MPU */
......@@ -28,6 +30,9 @@ void uniphier_ld11_clk_init(void)
writel(7, SG_ETPHYCNT);
}
/* TODO: use "mmc-pwrseq-emmc" */
writel(1, SDCTRL_EMMC_HW_RESET);
#ifdef CONFIG_USB_EHCI
{
/* FIXME: the current clk driver can not handle parents */
......
/*
* Copyright (C) 2017 Socionext Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <linux/io.h>
#include "../init.h"
#define SDCTRL_EMMC_HW_RESET 0x59810280
void uniphier_ld20_clk_init(void)
{
/* TODO: use "mmc-pwrseq-emmc" */
writel(1, SDCTRL_EMMC_HW_RESET);
}
......@@ -118,6 +118,7 @@ void uniphier_pro4_clk_init(void);
void uniphier_pro5_clk_init(void);
void uniphier_pxs2_clk_init(void);
void uniphier_ld11_clk_init(void);
void uniphier_ld20_clk_init(void);
unsigned int uniphier_boot_device_raw(void);
int uniphier_pin_init(const char *pinconfig_name);
......
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