diff options
| author | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2015-01-06 14:20:04 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2015-01-08 23:01:45 +0900 |
| commit | 2661dfd0046285e9007c1de126255bee11c0b8cd (patch) | |
| tree | 3cbd35c36cbc67d4d3aba6214639dc8e9a988f86 | |
| parent | 5e165b258f4231d8f9d07e773f19aaa57587f45a (diff) | |
| download | u-boot-imx-2661dfd0046285e9007c1de126255bee11c0b8cd.zip u-boot-imx-2661dfd0046285e9007c1de126255bee11c0b8cd.tar.gz u-boot-imx-2661dfd0046285e9007c1de126255bee11c0b8cd.tar.bz2 | |
ARM: UniPhier: enable output of system bus
For NAND boot on PH1-LD4, PH1-sLD8, and some other SoCs,
the output of the system bus is disabled by default.
It must be enabled by software to have access to the system bus.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
| -rw-r--r-- | arch/arm/cpu/armv7/uniphier/ph1-ld4/sbc_init.c | 7 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/uniphier/ph1-sld8/sbc_init.c | 7 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-uniphier/sbc-regs.h | 1 |
3 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/uniphier/ph1-ld4/sbc_init.c b/arch/arm/cpu/armv7/uniphier/ph1-ld4/sbc_init.c index a37ed16..4839c94 100644 --- a/arch/arm/cpu/armv7/uniphier/ph1-ld4/sbc_init.c +++ b/arch/arm/cpu/armv7/uniphier/ph1-ld4/sbc_init.c @@ -12,6 +12,13 @@ void sbc_init(void) { + u32 tmp; + + /* system bus output enable */ + tmp = readl(PC0CTRL); + tmp &= 0xfffffcff; + writel(tmp, PC0CTRL); + /* XECS1: sub/boot memory (boot swap = off/on) */ writel(SBCTRL0_SAVEPIN_MEM_VALUE, SBCTRL10); writel(SBCTRL1_SAVEPIN_MEM_VALUE, SBCTRL11); diff --git a/arch/arm/cpu/armv7/uniphier/ph1-sld8/sbc_init.c b/arch/arm/cpu/armv7/uniphier/ph1-sld8/sbc_init.c index af44dee..5efee9c 100644 --- a/arch/arm/cpu/armv7/uniphier/ph1-sld8/sbc_init.c +++ b/arch/arm/cpu/armv7/uniphier/ph1-sld8/sbc_init.c @@ -12,6 +12,13 @@ void sbc_init(void) { + u32 tmp; + + /* system bus output enable */ + tmp = readl(PC0CTRL); + tmp &= 0xfffffcff; + writel(tmp, PC0CTRL); + #if !defined(CONFIG_SPL_BUILD) /* XECS0 : dummy */ writel(SBCTRL0_SAVEPIN_MEM_VALUE, SBCTRL00); diff --git a/arch/arm/include/asm/arch-uniphier/sbc-regs.h b/arch/arm/include/asm/arch-uniphier/sbc-regs.h index 8e41078..efb68e8 100644 --- a/arch/arm/include/asm/arch-uniphier/sbc-regs.h +++ b/arch/arm/include/asm/arch-uniphier/sbc-regs.h @@ -95,6 +95,7 @@ #define SBCTRL1_ADMULTIPLX_MEM_VALUE 0x03005500 #define SBCTRL2_ADMULTIPLX_MEM_VALUE 0x14000010 +#define PC0CTRL 0x598000c0 #define ROM_BOOT_ROMRSV2 0x59801208 #ifndef __ASSEMBLY__ |