From 5b66482d44b4e9571c64285254a43bdfe9ed1262 Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Thu, 11 Aug 2016 14:02:50 +0800 Subject: 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 Signed-off-by: Bai Ping Cc: Stefano Babic --- arch/arm/cpu/armv7/mx6/soc.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'arch/arm/cpu/armv7/mx6') 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); } -- cgit v1.1