From: Andrew Jeffery <andrew@aj.id.au>
Date: Tue, 5 May 2020 07:27:42 +0000 (+0930)
Subject: ARM: dts: rainier: Configure ball Y23 as GPIOP7 for MCLR_VPP
X-Git-Tag: v5.15~3247^2~4^2~15
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1daa0147f113a61f2bde2d1dcb4c1d919483dbe5;p=platform%2Fkernel%2Flinux-starfive.git

ARM: dts: rainier: Configure ball Y23 as GPIOP7 for MCLR_VPP

GPIOP7 is used in the Rainier design to manage the state of a
microcontroller elsewhere in the system but its ball, Y23, is the
driver of the heartbeat LED on the ast2600-evb and the SoC defaults Y23
at power-on to the pulse-train behaviour used to drive the LED. This
causes much confusion for the micro in the Rainier system, so hog the
line as early as possible.

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Joel Stanley <joel@jms.id.au>
---

diff --git a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
index 2f57d8d..ac7cc96 100644
--- a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
@@ -102,6 +102,13 @@
 	/*AA0-AA7*/	"","","","","","","","",
 	/*AB0-AB7*/	"","","","","","","","",
 	/*AC0-AC7*/	"","","","","","","","";
+
+	pin_mclr_vpp {
+		gpio-hog;
+		gpios = <ASPEED_GPIO(P, 7) GPIO_OPEN_DRAIN>;
+		output-high;
+		line-name = "mclr_vpp";
+	};
 };
 
 &emmc_controller {