Difuse/u-boot
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

imx: imx6ull: adjust the ldo 1.2v bandgap voltage

Browse source 
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>
This commit is contained in:
Peng Fan 2016-08-11 14:02:50 +08:00 committed by Stefano Babic
parent 2d4bbd01a1
commit 5b66482d44
2 changed files with 7 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
arch/arm/cpu/armv7/mx6/soc.c
View file

@ -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);
}

1
arch/arm/include/asm/arch-mx6/crm_regs.h
View file

@ -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