ARM: dts: imx7d-sdb: Set VLDO4 outpt to 2.8V for MIPI CSI/DSI

According to mx7sabresd schematics the MIPI CSI/DSI voltage rails
should be 2.8V but the voltage provided is a maximum of 3.3V and
minimum of 1.8V. Providing such a higher voltage might damage the
peripherals and violates the schematic settings.

Signed-off-by: Gautam Bhat <mindentropy@gmail.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx7d-sdb.dts b/arch/arm/boot/dts/imx7d-sdb.dts
index 54c45402286b10dc06240aef9ec7d015a3fd5a58..923aa755ca13a8b7b3ad3cf6b9d38f5578b4058c 100644 (file)
--- a/arch/arm/boot/dts/imx7d-sdb.dts
+++ b/arch/arm/boot/dts/imx7d-sdb.dts
@@ -285,8 +285,8 @@
                        };
 
                        vgen6_reg: vldo4 {
-                               regulator-min-microvolt = <1800000>;
-                               regulator-max-microvolt = <3300000>;
+                               regulator-min-microvolt = <2800000>;
+                               regulator-max-microvolt = <2800000>;
                                regulator-always-on;
                        };
                };