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[61.220.246.151]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84f5a553071sm627409b3a.43.2026.08.07.01.31.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Aug 2026 01:32:01 -0700 (PDT) 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 v3 3/5] ARM: dts: aspeed: santabarbara: Add JTAG GPIO line names Date: Fri, 7 Aug 2026 16:34:06 +0800 Message-ID: <20260807083415.672008-4-fredchen.openbmc@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260807083415.672008-1-fredchen.openbmc@gmail.com> References: <20260807083415.672008-1-fredchen.openbmc@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Label the GPIO lines used for the CPU JTAG debug interface (TDI/TCK/TMS/TDO and CPLD DBREQ/TRST). These lines are driven from userspace via GPIO bit-banging to emulate JTAG signals for CPU debugging, so naming them lets userspace request the lines by name. Signed-off-by: Fred Chen --- .../boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts | 8 +++++--- 1 file changed, 5 insertions(+), 3 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 04fa9a5e0d04..9d334a01d407 100644 --- a/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts +++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-facebook-santabarbara.dts @@ -199,7 +199,9 @@ &gpio0 { /*F0-F7*/ "","","","","","","","", /*G0-G7*/ "FM_MUX1_SEL_R","","","","","","","", /*H0-H7*/ "","","","","","","","", - /*I0-I7*/ "","","","","","","","", + /*I0-I7*/ "","JTAG_1_BMC_TDI", + "JTAG_1_BMC_TCK","JTAG_1_BMC_TMS", + "JTAG_1_BMC_TDO","","","", /*J0-J7*/ "","","","","","","","", /*K0-K7*/ "","","","","","","","", /*L0-L7*/ "","","","","","","","", @@ -1911,8 +1913,8 @@ &sgpiom0 { "FM_IOEXP_U541_INT_N","FM_MODULE_PWR_EN_N_3B", /*H4-H7 line 120-127*/ "FM_IOEXP_PDB2_U1003_INT_N","FM_MODULE_PWR_EN_N_4B", - "","", - "","", + "","JTAG_CPLD_DBREQ", + "","JTAG_CPLD_TRST", "FM_MAIN_PWREN_RMC_EN_ISO_R","", /*I0-I3 line 128-135*/ "","","","", -- 2.52.0