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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2016-10-08 13:25:25 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2016-10-10 10:03:23 +0900 |
| commit | baaafaaad3d53706e3d02aa4e0bba75f535ebd18 (patch) | |
| tree | 37fdc9ace0d3081bdfca7587979137aa952c3a5f /arch/arm/mach-uniphier | |
| parent | c89638a02767c295ba368838f21ad1ab4825da96 (diff) | |
| download | u-boot-imx-baaafaaad3d53706e3d02aa4e0bba75f535ebd18.zip u-boot-imx-baaafaaad3d53706e3d02aa4e0bba75f535ebd18.tar.gz u-boot-imx-baaafaaad3d53706e3d02aa4e0bba75f535ebd18.tar.bz2 | |
ARM: uniphier: add work-around for VBO noise problem
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.masahiro@socionext.com>
Diffstat (limited to 'arch/arm/mach-uniphier')
| -rw-r--r-- | arch/arm/mach-uniphier/board_init.c | 7 |
1 files changed, 7 insertions, 0 deletions
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); |