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From: Delphine CC Chiu <Delphine_CC_Chiu@wiwynn.com>
To: patrick@stwcx.xyz, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>, Joel Stanley <joel@jms.id.au>,
	Andrew Jeffery <andrew@codeconstruct.com.au>
Cc: Ricky CX Wu <ricky.cx.wu.wiwynn@gmail.com>,
	Delphine CC Chiu <Delphine_CC_Chiu@wiwynn.com>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 1/2] ARM: dts: aspeed: yosemite4: Revise quad mode to dual mode
Date: Tue, 24 Sep 2024 17:44:29 +0800	[thread overview]
Message-ID: <20240924094430.272074-2-Delphine_CC_Chiu@wiwynn.com> (raw)
In-Reply-To: <20240924094430.272074-1-Delphine_CC_Chiu@wiwynn.com>

From: Ricky CX Wu <ricky.cx.wu.wiwynn@gmail.com>

Revise quad mode to dual mode to keep the write protect feature for the
SPI flash because the WP pin is the same pin with IO2 pin in quad mode.

Signed-off-by: Ricky CX Wu <ricky.cx.wu.wiwynn@gmail.com>
Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@wiwynn.com>
---
 arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts
index 98477792aa00..c4af50ba6999 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts
@@ -105,7 +105,8 @@ flash@0 {
 		status = "okay";
 		m25p,fast-read;
 		label = "bmc";
-		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <2>;
+		spi-rx-bus-width = <2>;
 		spi-max-frequency = <50000000>;
 #include "openbmc-flash-layout-64.dtsi"
 	};
@@ -113,7 +114,8 @@ flash@1 {
 		status = "okay";
 		m25p,fast-read;
 		label = "bmc2";
-		spi-rx-bus-width = <4>;
+		spi-tx-bus-width = <2>;
+		spi-rx-bus-width = <2>;
 		spi-max-frequency = <50000000>;
 	};
 };
-- 
2.25.1


  reply	other threads:[~2024-09-24  9:44 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-09-24  9:44 [PATCH v2 0/2] Adjust the setting for SPI flash of yosemite4 Delphine CC Chiu
2024-09-24  9:44 ` Delphine CC Chiu [this message]
2024-09-24  9:44 ` [PATCH v2 2/2] ARM: dts: aspeed: yosemite4: revise flash layout to 128MB Delphine CC Chiu
2024-09-25  0:52 ` [PATCH v2 0/2] Adjust the setting for SPI flash of yosemite4 Andrew Jeffery

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