linux-kernel - [PATCH 4.19 542/639] ARM: dts: aspeed-g5: Fixe gpio-ranges upper limit

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Message-Id: <20200124093156.938644769@linuxfoundation.org>
Date:   Fri, 24 Jan 2020 10:31:52 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Oscar A Perez <linux@...ralgames.com>,
        Andrew Jeffery <andrew@...id.au>,
        Joel Stanley <joel@....id.au>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 542/639] ARM: dts: aspeed-g5: Fixe gpio-ranges upper limit

From: Oscar A Perez <linux@...ralgames.com>

[ Upstream commit 89b97c429e2e77d695b5133572ca12ec256a4ea4 ]

According to the AST2500/AST2520 specs, these SoCs support up to 228 GPIO
pins. However, 'gpio-ranges' value in 'aspeed-g5.dtsi' file is currently
setting the upper limit to 220 which isn't allowing access to all their
GPIOs. The correct upper limit value is 232 (actual number is 228 plus a
4-GPIO hole in GPIOAB). Without this patch, GPIOs AC5 and AC6 do not work
correctly on a AST2500 BMC running Linux Kernel v4.19

Fixes: 2039f90d136c ("ARM: dts: aspeed-g5: Add gpio controller to devicetree")
Signed-off-by: Oscar A Perez <linux@...ralgames.com>
Reviewed-by: Andrew Jeffery <andrew@...id.au>
Signed-off-by: Joel Stanley <joel@....id.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm/boot/dts/aspeed-g5.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/aspeed-g5.dtsi b/arch/arm/boot/dts/aspeed-g5.dtsi
index d107459fc0f89..f2e1015d75ab4 100644
--- a/arch/arm/boot/dts/aspeed-g5.dtsi
+++ b/arch/arm/boot/dts/aspeed-g5.dtsi
@@ -247,7 +247,7 @@
 				compatible = "aspeed,ast2500-gpio";
 				reg = <0x1e780000 0x1000>;
 				interrupts = <20>;
-				gpio-ranges = <&pinctrl 0 0 220>;
+				gpio-ranges = <&pinctrl 0 0 232>;
 				clocks = <&syscon ASPEED_CLK_APB>;
 				interrupt-controller;
 			};
-- 
2.20.1