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| author | Peng Fan <van.freenix@gmail.com> | 2016-08-11 14:02:50 +0800 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2016-10-04 15:41:01 +0200 |
| commit | 5b66482d44b4e9571c64285254a43bdfe9ed1262 (patch) | |
| tree | 1d5071044b0bff227ffcfb6d81ef9ac6e8dd7883 /arch/arm | |
| parent | 2d4bbd01a1c2d74bef645296bf72aa33dc5eb7d3 (diff) | |
| download | u-boot-imx-5b66482d44b4e9571c64285254a43bdfe9ed1262.zip u-boot-imx-5b66482d44b4e9571c64285254a43bdfe9ed1262.tar.gz u-boot-imx-5b66482d44b4e9571c64285254a43bdfe9ed1262.tar.bz2 | |
imx: imx6ull: adjust the ldo 1.2v bandgap voltage
Per to design team, on i.MX6UL, the LDO 1.2V bandgap voltage
is 30mV higher, so we need to adjust the REFTOP_VBGADJ(anatop
MISC0 bit[6:4]) setting to 2b'110.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Bai Ping <ping.bai@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 6 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx6/crm_regs.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index ff1c4f4..bc3e634 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -314,6 +314,12 @@ static void init_bandgap(void) * be set. */ writel(BM_ANADIG_ANA_MISC0_REFTOP_SELBIASOFF, &anatop->ana_misc0_set); + /* + * On i.MX6ULL, the LDO 1.2V bandgap voltage is 30mV higher. so set + * VBGADJ bits to 2b'110 to adjust it. + */ + if (is_mx6ull()) + writel(BM_ANADIG_ANA_MISC0_REFTOP_VBGADJ, &anatop->ana_misc0_set); } diff --git a/arch/arm/include/asm/arch-mx6/crm_regs.h b/arch/arm/include/asm/arch-mx6/crm_regs.h index 7a55aec..f74737a 100644 --- a/arch/arm/include/asm/arch-mx6/crm_regs.h +++ b/arch/arm/include/asm/arch-mx6/crm_regs.h @@ -1271,6 +1271,7 @@ struct mxc_ccm_reg { (((v) << 0) & BM_ANADIG_PFD_528_PFD0_FRAC) #define BM_ANADIG_ANA_MISC0_REFTOP_SELBIASOFF 0x00000008 +#define BM_ANADIG_ANA_MISC0_REFTOP_VBGADJ 0x60 #define BM_PMU_MISC2_AUDIO_DIV_MSB (1 << 23) #define BP_PMU_MISC2_AUDIO_DIV_MSB 23 |