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ARM: uniphier: remove NAND reset code

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Now that commit 3e57f879ee ("mtd: nand: raw: denali: Assert reset
before deassert") added the reset assertion, this code in the board
file is unneeded.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2020-07-10 22:31:27 +09:00
parent 94e8b328a7
commit 5785950369
4 changed files with 0 additions and 55 deletions
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1
arch/arm/mach-uniphier/Makefile
View file

@ -22,7 +22,6 @@ endif
obj-$(CONFIG_MICRO_SUPPORT_CARD) += micro-support-card.o
obj-y += pinctrl-glue.o
obj-$(CONFIG_MMC) += mmc-first-dev.o
obj-$(CONFIG_NAND_DENALI) += nand-reset.o
obj-y += fdt-fixup.o
endif

4
arch/arm/mach-uniphier/board_init.c
View file

@ -163,10 +163,6 @@ int board_init(void)
if (initdata->misc_init)
initdata->misc_init();
led_puts("U3");
uniphier_nand_reset_assert();
led_puts("Uboo");
return 0;

7
arch/arm/mach-uniphier/init.h
View file

@ -75,13 +75,6 @@ int uniphier_have_internal_stm(void);
int uniphier_boot_from_backend(void);
int uniphier_pin_init(const char *pinconfig_name);
#ifdef CONFIG_NAND_DENALI
void uniphier_nand_reset_assert(void);
#else
static inline void uniphier_nand_reset_assert(void)
{
}
#endif
#ifdef CONFIG_ARM64
void uniphier_mem_map_init(unsigned long dram_base, unsigned long dram_size);
#else

43
arch/arm/mach-uniphier/nand-reset.c
View file

@ -1,43 +0,0 @@
// SPDX-License-Identifier: GPL-2.0 or later
/*
* Copyright (C) 2020 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <linux/errno.h>
#include <dm.h>
#include <dm/uclass-internal.h>
#include <reset.h>
#include "init.h"
/*
* Assert the Denali NAND controller reset if found.
*
* On LD4, the bootstrap process starts running after power-on reset regardless
* of the boot mode, here the pin-mux is not necessarily set up for NAND, then
* the controller is stuck. Assert the controller reset here, and should be
* deasserted in the driver after the pin-mux is correctly handled. For other
* SoCs, the bootstrap runs only when the boot mode selects ONFi, but it is yet
* effective when the boot swap is on. So, the reset should be asserted anyway.
*/
void uniphier_nand_reset_assert(void)
{
struct udevice *dev;
struct reset_ctl_bulk resets;
int ret;
ret = uclass_find_first_device(UCLASS_MTD, &dev);
if (ret || !dev)
return;
/* make sure this is the Denali NAND controller */
if (strcmp(dev->driver->name, "denali-nand-dt"))
return;
ret = reset_get_bulk(dev, &resets);
if (ret)
return;
reset_assert_bulk(&resets);
}