From: Gautam Bhat <mindentropy@gmail.com>
Date: Sun, 2 Jul 2017 19:20:32 +0000 (+0530)
Subject: mx7dsabresd: Set VLD04 output to 2.8V in PMIC initialization.
X-Git-Tag: v2017.09-rc1~190^2~20
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=d8fab10cb48e42c6ba84925af058349dca46dfa0;p=u-boot

mx7dsabresd: Set VLD04 output to 2.8V in PMIC initialization.

This change sets the VLDO4 settings output to 2.8V in PMIC
initialization so that the MIPI DSI/CSI input voltage is 2.8V
as per the schematics. The original code provides an output of
3.3V which violates the voltage mentioned in the schematics.

Signed-off-by: Gautam Bhat <mindentropy@gmail.com>
Acked-by: Fabio Estevam <fabio.estevam@nxp.com>
---

diff --git a/board/freescale/mx7dsabresd/mx7dsabresd.c b/board/freescale/mx7dsabresd/mx7dsabresd.c
index ecea5a529a..7d22501d26 100644
--- a/board/freescale/mx7dsabresd/mx7dsabresd.c
+++ b/board/freescale/mx7dsabresd/mx7dsabresd.c
@@ -354,6 +354,12 @@ int power_init_board(void)
 
 	pmic_clrsetbits(dev, PFUZE3000_LDOGCTL, 0, 1);
 
+	/*
+	 * Set the voltage of VLDO4 output to 2.8V which feeds
+	 * the MIPI DSI and MIPI CSI inputs.
+	 */
+	pmic_clrsetbits(dev, PFUZE3000_VLD4CTL, 0xF, 0xA);
+
 	return 0;
 }
 #endif