From: Fred Chen <fredchen.openbmc@gmail.com>
To: 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>,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH v1 1/2] ARM: dts: aspeed: santabarbara: Add swb IO expander and gpio line names
Date: Tue, 25 Nov 2025 21:59:30 +0800 [thread overview]
Message-ID: <20251125135934.3138781-2-fredchen.openbmc@gmail.com> (raw)
In-Reply-To: <20251125135934.3138781-1-fredchen.openbmc@gmail.com>
Add IO expander emulated by the switch board CPLD to handle UART and SPI
mux control signals. Also add SGPIO labels with FM_MODULE_PWR_EN_N_*
signals, which control power to each ASIC module individually.
Signed-off-by: Fred Chen <fredchen.openbmc@gmail.com>
---
.../aspeed-bmc-facebook-santabarbara.dts | 22 +++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
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 f74f463cc878..4312ead311df 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts
@@ -1328,6 +1328,20 @@ eeprom@50 {
&i2c12 {
status = "okay";
+ gpio@27 {
+ compatible = "nxp,pca9555";
+ reg = <0x27>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-line-names =
+ "PEX0_MODE_SEL1_R","PEX0_MODE_SEL2_R",
+ "PEX0_MODE_SEL3_R","PEX0_MODE_SEL4_R",
+ "","","","",
+ "UART_MUX_SEL","RST_SMB_NIC_R_N",
+ "RST_SMB_N","RST_CP2102N_N",
+ "SPI_MUX_SEL","","","";
+ };
+
// SWB FRU
eeprom@52 {
compatible = "atmel,24c64";
@@ -1758,11 +1772,11 @@ &sgpiom0 {
"","BIOS_DEBUG_MODE",
/*H0-H3 line 112-119*/
"FM_IOEXP_U538_INT_N","",
- "FM_IOEXP_U539_INT_N","",
- "FM_IOEXP_U540_INT_N","",
- "FM_IOEXP_U541_INT_N","",
+ "FM_IOEXP_U539_INT_N","FM_MODULE_PWR_EN_N_1B",
+ "FM_IOEXP_U540_INT_N","FM_MODULE_PWR_EN_N_2B",
+ "FM_IOEXP_U541_INT_N","FM_MODULE_PWR_EN_N_3B",
/*H4-H7 line 120-127*/
- "FM_IOEXP_PDB2_U1003_INT_N","",
+ "FM_IOEXP_PDB2_U1003_INT_N","FM_MODULE_PWR_EN_N_4B",
"","",
"","",
"FM_MAIN_PWREN_RMC_EN_ISO_R","",
--
2.49.0
next prev parent reply other threads:[~2025-11-25 13:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-25 13:59 [PATCH v1 0/2] Revise Meta Santabarbara devicetree Fred Chen
2025-11-25 13:59 ` Fred Chen [this message]
2025-11-25 13:59 ` [PATCH v1 2/2] ARM: dts: aspeed: santabarbara: Enable ipmb device for OCP debug card Fred Chen
2025-11-27 0:26 ` [PATCH v1 0/2] Revise Meta Santabarbara devicetree Andrew Jeffery
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20251125135934.3138781-2-fredchen.openbmc@gmail.com \
--to=fredchen.openbmc@gmail.com \
--cc=andrew@codeconstruct.com.au \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=joel@jms.id.au \
--cc=krzk+dt@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-aspeed@lists.ozlabs.org \
--cc=linux-kernel@vger.kernel.org \
--cc=robh@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox