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| author | Jason Liu <r64343@freescale.com> | 2013-05-22 15:53:42 +0800 |
|---|---|---|
| committer | Jason Liu <r64343@freescale.com> | 2013-05-24 09:26:01 +0800 |
| commit | c396f370d3de7f21b12f7c15237ecd03bf31fcc6 (patch) | |
| tree | db25463213f1ddba9acfa50a8520a8b4b4a17599 | |
| parent | b0d17d9fc6012926bb97e2e7ac917042f9828938 (diff) | |
| download | u-boot-imx-c396f370d3de7f21b12f7c15237ecd03bf31fcc6.zip u-boot-imx-c396f370d3de7f21b12f7c15237ecd03bf31fcc6.tar.gz u-boot-imx-c396f370d3de7f21b12f7c15237ecd03bf31fcc6.tar.bz2 | |
ENGR00264076-1 i.mx6:reset LDOs step_time
ROM may modify CORE's LDO step_time settings according to the fuse
setting for safe, reset them to the default value.Reset it to 0'b00.
0'b00: 64 cycles of 24M clock;
0'b01: 128 cycles of 24M clock;
0'b02: 256 cycles of 24M clock;
0'b03: 512 cycles of 24M clock;
Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Jason Liu <r64343@freescale.com>
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index 69b8487..8826e4d 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -2,7 +2,7 @@ * (C) Copyright 2007 * Sascha Hauer, Pengutronix * - * (C) Copyright 2009 Freescale Semiconductor, Inc. + * (C) Copyright 2009-2013 Freescale Semiconductor, Inc. * * See file CREDITS for list of people who contributed to this * project. @@ -133,6 +133,14 @@ void set_vddsoc(u32 mv) */ reg = (reg & ~(0x1F << 18)) | (val << 18); writel(reg, &anatop->reg_core); + + /* ROM may modify LDO ramp up time according to fuse setting for safe, + * we need to reset these settings to match the reset value: 0'b00 + */ + reg = readl(&anatop->ana_misc2); + reg &= ~(0x3f << 24); + writel(reg, &anatop->ana_misc2); + } static void imx_set_wdog_powerdown(bool enable) |