Raise the VDD09 voltage line to 1.0V to suppress VBO noise.
This errata work-around code is needed only for ES1.
Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com>
---
arch/arm/mach-uniphier/board_init.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/arm/mach-uniphier/board_init.c
b/arch/arm/mach-uniphier/board_init.c
index b9be52f..8c7864c 100644
--- a/arch/arm/mach-uniphier/board_init.c
+++ b/arch/arm/mach-uniphier/board_init.c
@@ -134,6 +134,13 @@ int board_init(void)
#endif
#if defined(CONFIG_ARCH_UNIPHIER_LD20)
case SOC_UNIPHIER_LD20:
+ /* ES1 errata: increase VDD09 supply to suppress VBO noise */
+ if (uniphier_get_soc_revision() == 1) {
+ writel(0x00000003, 0x6184e004);
+ writel(0x00000100, 0x6184e040);
+ writel(0x0000b500, 0x6184e024);
+ writel(0x00000001, 0x6184e000);
+ }
uniphier_nand_pin_init(false);
sg_set_pinsel(149, 14, 8, 4); /* XIRQ0 -> XIRQ0 */
sg_set_iectrl(149);
--
1.9.1
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