linux-kernel - [PATCH 2/3] ARM: dts: aspeed: zaius: update 12V brick I2C address

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Message-Id: <20190416162150.150154-3-venture@google.com>
Date:   Tue, 16 Apr 2019 09:21:50 -0700
From:   Patrick Venture <venture@...gle.com>
To:     venture@...gle.com, robh+dt@...nel.org, mark.rutland@....com,
        joel@....id.au, andrew@...id.au
Cc:     Robert Lippert <rlippert@...gle.com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] ARM: dts: aspeed: zaius: update 12V brick I2C address

From: Robert Lippert <rlippert@...gle.com>

The I2C address of the brick is different depending on the board SKU.

Update the values to instantiate addresses which work for most boards.

Signed-off-by: Robert Lippert <rlippert@...gle.com>
Signed-off-by: Patrick Venture <venture@...gle.com>
---
 arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts b/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts
index 63e892f16d050..51265af622574 100644
--- a/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts
@@ -328,10 +328,21 @@
 	 *   LM5066I PMBUS @10h
 	 */
 
-	/* 12V Quarter Brick DC/DC Converter Q54SJ12050 @61h */
-	power-brick@61 {
+	/*
+	 * Brick will be one of these types/addresses.  Depending
+	 * on the board SKU only one is actually present and will successfully
+	 * instantiate while the others will fail the probe operation.
+	 * These are the PVT (and presumably beyond) addresses:
+	 *    12V Quarter Brick DC/DC Converter Q54SJ12050 @6Ah
+	 *    12V Quarter Brick DC/DC Converter Q54SH12050 @30h
+	 */
+	power-brick@6a {
+		compatible = "delta,dps800";
+		reg = <0x6a>;
+	};
+	power-brick@30 {
 		compatible = "delta,dps800";
-		reg = <0x61>;
+		reg = <0x30>;
 	};
 
 	/* CPU0 VR ISL68137 0.7V, 0.96V PMBUS @64h */
@@ -342,7 +353,6 @@
 	/* Master selector PCA9541A @70h (other master: CPU0)
 	 *   LM5066I PMBUS @10h
 	 */
-	/* 12V SMPS Q54SH12050NNDH @61h */
 };
 
 &i2c8 {
-- 
2.21.0.392.gf8f6787159e-goog