From: Andrew Jeffery <andrew@aj.id.au>
To: openbmc@lists.ozlabs.org, joel@jms.id.au
Cc: elkowals@us.ibm.com
Subject: [PATCH linux dev-5.4 3/3] ARM: dts: rainier: Configure ball Y23 as GPIOP7 for MCLR_VPP
Date: Tue, 5 May 2020 16:57:42 +0930 [thread overview]
Message-ID: <20200505072742.350305-4-andrew@aj.id.au> (raw)
In-Reply-To: <20200505072742.350305-1-andrew@aj.id.au>
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>
---
arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts b/arch/arm/boot/dts/aspeed-bmc-ibm-rainier.dts
index 01db238ce741..794af5517313 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 {
--
2.25.1
prev parent reply other threads:[~2020-05-05 7:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-05 7:27 [PATCH linux dev-5.4 0/3] AST2600's Y23 heartbeat to pinctrl Andrew Jeffery
2020-05-05 7:27 ` [PATCH linux dev-5.4 1/3] dt-bindings: pinctrl: Add HEARTBEAT to ASPEED AST2600 Andrew Jeffery
2020-05-05 7:27 ` [PATCH linux dev-5.4 2/3] pinctrl: aspeed: Describe the heartbeat function on ball Y23 Andrew Jeffery
2020-05-05 7:27 ` Andrew Jeffery [this message]
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