From: Michal Simek <michal.simek@xilinx.com>
Date: Tue, 25 Jun 2019 07:09:15 +0000 (+0200)
Subject: arm64: zynqmp: Fix ina226/u12 setup for System Controller
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dae3ac3945c4488933a1200b1751d4ed7161e2e2;p=thirdparty%2Fu-boot.git

arm64: zynqmp: Fix ina226/u12 setup for System Controller

Linux driver is not capable to handle 10Ohm shunt resistor.
That's why setup 1Ohm and setup proper calculation in user space.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

diff --git a/arch/arm/dts/zynqmp-a2197-p-revA.dts b/arch/arm/dts/zynqmp-a2197-p-revA.dts
index fcb537d54ed..7c672ac27d5 100644
--- a/arch/arm/dts/zynqmp-a2197-p-revA.dts
+++ b/arch/arm/dts/zynqmp-a2197-p-revA.dts
@@ -370,7 +370,8 @@ marwell m88e1512 - SGMII */
 			vcc_bat: ina226@4e { /* u12 */
 				compatible = "ti,ina226";
 				reg = <0x4e>;
-				shunt-resistor = <10000000>; /* 10 ohm */
+				/* 10 ohm real value - setup 1ohm because of driver limitation */
+				shunt-resistor = <1000000>;
 			};
 		};
 		i2c@4 { /* LP_I2C_SM */