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| author | Bai Ping <ping.bai@nxp.com> | 2016-08-25 18:26:38 +0800 |
|---|---|---|
| committer | Bai Ping <ping.bai@nxp.com> | 2016-08-25 21:30:35 +0800 |
| commit | 911fcf93bad8c0a595c350b92f107b626029559b (patch) | |
| tree | 7259ba62692f2b429338ac9884858c9d4c490e6b | |
| parent | 44a84b44a84cd1bdcc54d722987e5f109510891b (diff) | |
| download | u-boot-imx-911fcf93bad8c0a595c350b92f107b626029559b.zip u-boot-imx-911fcf93bad8c0a595c350b92f107b626029559b.tar.gz u-boot-imx-911fcf93bad8c0a595c350b92f107b626029559b.tar.bz2 | |
MLK-13124 ARM: imx: update the REFTOP_VBGADJ setting
Per to design team, we need to set REFTOP_VBGADJ
in PMU MISC0 according to the REFTOP_TRIM[2:0] fuse. the
actually table is as below:
'000' - set REFTOP_VBGADJ[2:0] to 3b'110
'110' - set REFTOP_VBGADJ[2:0] to 3b'000
'001' - set REFTOP_VBGADJ[2:0] to 3b'001
'010' - set REFTOP_VBGADJ[2:0] to 3b'010
'011' - set REFTOP_VBGADJ[2:0] to 3b'011
'100' - set REFTOP_VBGADJ[2:0] to 3b'100
'101' - set REFTOP_VBGADJ[2:0] to 3b'101
'111' - set REFTOP_VBGADJ[2:0] to 3b'111
Signed-off-by: Bai Ping <ping.bai@nxp.com>
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/soc.c | 36 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx6/crm_regs.h | 2 |
2 files changed, 32 insertions, 6 deletions
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c index 1f3e145..9ecee77 100644 --- a/arch/arm/cpu/armv7/mx6/soc.c +++ b/arch/arm/cpu/armv7/mx6/soc.c @@ -310,9 +310,17 @@ static void clear_mmdc_ch_mask(void) writel(reg, &mxc_ccm->ccdr); } +#define OCOTP_MEM0_REFTOP_TRIM_SHIFT 8 + static void init_bandgap(void) { struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR; + struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR; + struct fuse_bank *bank = &ocotp->bank[1]; + struct fuse_bank1_regs *fuse = + (struct fuse_bank1_regs *)bank->fuse_regs; + uint32_t val; + /* * Ensure the bandgap has stabilized. */ @@ -325,14 +333,32 @@ static void init_bandgap(void) */ 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. + * On i.MX6ULL,we need to set VBGADJ bits according to the + * REFTOP_TRIM[3:0] in fuse table + * 000 - set REFTOP_VBGADJ[2:0] to 3b'110, + * 110 - set REFTOP_VBGADJ[2:0] to 3b'000, + * 001 - set REFTOP_VBGADJ[2:0] to 3b'001, + * 010 - set REFTOP_VBGADJ[2:0] to 3b'010, + * 011 - set REFTOP_VBGADJ[2:0] to 3b'011, + * 100 - set REFTOP_VBGADJ[2:0] to 3b'100, + * 101 - set REFTOP_VBGADJ[2:0] to 3b'101, + * 111 - set REFTOP_VBGADJ[2:0] to 3b'111, */ - if (is_cpu_type(MXC_CPU_MX6ULL)) - writel(BM_ANADIG_ANA_MISC0_REFTOP_VBGADJ, &anatop->ana_misc0_set); + if (is_cpu_type(MXC_CPU_MX6ULL)) { + val = readl(&fuse->mem0); + val >>= OCOTP_MEM0_REFTOP_TRIM_SHIFT; + val &= 0x7; + + if (val == 0) { + val = 6; + } else if (val == 6) { + val = 0; + } + writel(val << BM_ANADIG_ANA_MISC0_REFTOP_VBGADJ_SHIFT, + &anatop->ana_misc0_set); + } } - #ifdef CONFIG_MX6SL static void set_preclk_from_osc(void) { diff --git a/arch/arm/include/asm/arch-mx6/crm_regs.h b/arch/arm/include/asm/arch-mx6/crm_regs.h index bc4f39e..c85e918 100644 --- a/arch/arm/include/asm/arch-mx6/crm_regs.h +++ b/arch/arm/include/asm/arch-mx6/crm_regs.h @@ -1272,7 +1272,7 @@ 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_ANADIG_ANA_MISC0_REFTOP_VBGADJ_SHIFT 4 #define BM_PMU_MISC2_AUDIO_DIV_MSB (1 << 23) #define BP_PMU_MISC2_AUDIO_DIV_MSB 23 |