From: Billy Tsai <billy_tsai@aspeedtech.com>
To: Andrew Jeffery <andrew@codeconstruct.com.au>,
Linus Walleij <linusw@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>, Joel Stanley <joel@jms.id.au>
Cc: <linux-aspeed@lists.ozlabs.org>, <openbmc@lists.ozlabs.org>,
<linux-gpio@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
"Billy Tsai" <billy_tsai@aspeedtech.com>
Subject: [PATCH 1/2] dt-bindings: pinctrl: aspeed,ast2700-soc1: Add JTAGM1TRST group
Date: Tue, 16 Jun 2026 11:30:01 +0800 [thread overview]
Message-ID: <20260616-pinctrl-fix-v1-1-621036e45c7c@aspeedtech.com> (raw)
In-Reply-To: <20260616-pinctrl-fix-v1-0-621036e45c7c@aspeedtech.com>
The TRST signal of the JTAG master is optional and may not be wired on
every design, but it is only selectable as part of the JTAGM1 group,
which forces the D12 ball to be muxed whenever the JTAG master is used.
Add a separate JTAGM1TRST group so boards can enable TRST independently
of the other JTAG master signals.
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
---
.../devicetree/bindings/pinctrl/aspeed,ast2700-soc1-pinctrl.yaml | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/pinctrl/aspeed,ast2700-soc1-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/aspeed,ast2700-soc1-pinctrl.yaml
index 76944fd14e2c..fe7cef4fef6a 100644
--- a/Documentation/devicetree/bindings/pinctrl/aspeed,ast2700-soc1-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/aspeed,ast2700-soc1-pinctrl.yaml
@@ -356,6 +356,7 @@ patternProperties:
- I3C8
- I3C9
- JTAGM1
+ - JTAGM1TRST
- LPC0
- LPC1
- LTPI
--
2.34.1
next prev parent reply other threads:[~2026-06-16 3:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-16 3:30 [PATCH 0/2] pinctrl: aspeed: Make AST2700 SoC1 JTAG master TRST optional Billy Tsai
2026-06-16 3:30 ` Billy Tsai [this message]
2026-06-16 15:59 ` [PATCH 1/2] dt-bindings: pinctrl: aspeed,ast2700-soc1: Add JTAGM1TRST group Conor Dooley
2026-06-16 3:30 ` [PATCH 2/2] pinctrl: aspeed: Split TRST out of the AST2700 SoC1 JTAGM1 group Billy Tsai
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