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[61.220.246.151]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82379bff93esm5142425b3a.41.2026.01.28.23.37.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Jan 2026 23:37:53 -0800 (PST) From: Fred Chen To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Joel Stanley , Andrew Jeffery , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH] ARM: dts: aspeed: santabarbara: Add swb cpld io expander Date: Thu, 29 Jan 2026 15:37:48 +0800 Message-ID: <20260129073749.3155383-1-fredchen.openbmc@gmail.com> X-Mailer: git-send-email 2.52.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260128_233755_581153_B564B1FC X-CRM114-Status: UNSURE ( 8.69 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add CPLD-simulated IO expanders for cable presence detection and 4 SPI flash control. To resolve sideband pin shortages, one IO expander is utilized to aggregate interrupt signals. Signed-off-by: Fred Chen --- .../aspeed-bmc-facebook-santabarbara.dts | 48 +++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts index 0a3e2e241063..39f7fade8ff7 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts @@ -1335,6 +1335,39 @@ eeprom@50 { &i2c12 { status = "okay"; + ioexp0: gpio@20 { + compatible = "nxp,pca9555"; + reg = <0x20>; + gpio-controller; + #gpio-cells = <2>; + interrupt-controller; + #interrupt-cells = <2>; + interrupt-parent = <&sgpiom0>; + interrupts = <148 IRQ_TYPE_LEVEL_LOW>; + gpio-line-names = + "IOEXP_21h_INT_N","","","", + "","","","", + "","","","", + "","","",""; + }; + + gpio@21 { + compatible = "nxp,pca9555"; + reg = <0x21>; + gpio-controller; + #gpio-cells = <2>; + interrupt-parent = <&ioexp0>; + interrupts = <0 IRQ_TYPE_LEVEL_LOW>; + gpio-line-names = + "PDB_PRSNT_J1_N","PDB_PRSNT_J2_N", + "PRSNT_NIC1_N","PRSNT_NIC2_N", + "PRSNT_NIC3_N","PRSNT_NIC4_N", + "SWB_PWR_FAULT_STATUS","", + "CBL_PRSNT_MCIO_0_N","CBL_PRSNT_MCIO_1_N", + "CBL_PRSNT_MCIO_2_N","CBL_PRSNT_MCIO_3_N", + "","","",""; + }; + gpio@27 { compatible = "nxp,pca9555"; reg = <0x27>; @@ -1349,6 +1382,21 @@ gpio@27 { "SPI_MUX_SEL","","",""; }; + gpio@28 { + compatible = "nxp,pca9555"; + reg = <0x28>; + gpio-controller; + #gpio-cells = <2>; + gpio-line-names = + "SCO_UART_MUX_SEL0","SCO_UART_MUX_SEL1", + "SPI_PROG_PL12_SEL","SPI_PROG_PL34_SEL", + "","","","", + "I3C_HUB_3_MUX_SEL_PLD","", + "SPI_PROG_PL12_EN_N","SPI_PROG_PL34_EN_N", + "SCO1_SPI_SEL","SCO2_SPI_SEL", + "SCO3_SPI_SEL","SCO4_SPI_SEL"; + }; + // SWB FRU eeprom@52 { compatible = "atmel,24c64"; -- 2.52.0