diff options
| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2020-02-14 20:54:41 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2020-02-28 02:40:22 +0900 |
| commit | 1320fa2e55d2180573fd48c71f097e1ec7dc4833 (patch) | |
| tree | 74971c34ed19e507fdebdce423fcceb34754c3bb /arch/arm/mach-uniphier | |
| parent | ce4e9ff4d2366f7f55815305161ecdc444f5c010 (diff) | |
ARM: uniphier: remove workaround for the NAND write protect
This workaround was previously needed for LD4, Pro4, sLD8, Pro5
SoCs. The boot ROM does not touch this register for PXs2/LD6b or
later.
Now that the reset signal of the Denali NAND controller is always
asserted in board_init() then deasserted in the driver, the
WRITE_PROTECT register gets back to the default value, which means
the write protect is deasserted.
This workaround can go away entirely.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'arch/arm/mach-uniphier')
| -rw-r--r-- | arch/arm/mach-uniphier/board_late_init.c | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/arch/arm/mach-uniphier/board_late_init.c b/arch/arm/mach-uniphier/board_late_init.c index 793283058c..378aad0c9c 100644 --- a/arch/arm/mach-uniphier/board_late_init.c +++ b/arch/arm/mach-uniphier/board_late_init.c @@ -14,25 +14,9 @@ #include <stdio.h> #include <linux/io.h> #include <linux/printk.h> -#include <../drivers/mtd/nand/raw/denali.h> #include "init.h" -static void nand_denali_wp_disable(void) -{ -#ifdef CONFIG_NAND_DENALI - /* - * Since the boot rom enables the write protection for NAND boot mode, - * it must be disabled somewhere for "nand write", "nand erase", etc. - * The workaround is here to not disturb the Denali NAND controller - * driver just for a really SoC-specific thing. - */ - void __iomem *denali_reg = (void __iomem *)CONFIG_SYS_NAND_REGS_BASE; - - writel(WRITE_PROTECT__FLAG, denali_reg + WRITE_PROTECT); -#endif -} - static void uniphier_set_env_fdt_file(void) { DECLARE_GLOBAL_DATA_PTR; @@ -114,7 +98,6 @@ int board_late_init(void) case BOOT_DEVICE_NAND: printf("NAND Boot"); env_set("bootdev", "nand"); - nand_denali_wp_disable(); break; case BOOT_DEVICE_NOR: printf("NOR Boot"); |