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From: Delphine CC Chiu <Delphine_CC_Chiu@wiwynn.com>
To: patrick@stwcx.xyz,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Joel Stanley <joel@jms.id.au>,
Andrew Jeffery <andrew@codeconstruct.com.au>
Cc: 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 v5 05/21] ARM: dts: aspeed: yosemite4: Revise quad mode to
dual mode
Date: Wed, 31 Jan 2024 16:41:16 +0800
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Add i2c-mux and eeprom devices for Meta Yosemite 4
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Commit Message
Delphine CC Chiu
Jan. 31, 2024, 8:41 a.m. UTC
Revise quad mode to dual mode to avoid WP pin influnece the SPI
Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@wiwynn.com>
---
.../arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
Comments
On Wed, 2024-01-31 at 16:41 +0800, Delphine CC Chiu wrote: > Revise quad mode to dual mode to avoid WP pin influnece the SPI What do you mean by this? Can you unpack what's going on a little more in the commit message? Andrew > > Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@wiwynn.com> > --- > .../arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts | 8 +++++--- > 1 file changed, 5 insertions(+), 3 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 f8bfdefbefc6..23006dca5f26 100644 > --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts > +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts > @@ -149,15 +149,17 @@ 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" > +#include "openbmc-flash-layout-128.dtsi" > }; > 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>; > }; > };
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 f8bfdefbefc6..23006dca5f26 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-yosemite4.dts @@ -149,15 +149,17 @@ 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" +#include "openbmc-flash-layout-128.dtsi" }; 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>; }; };