[{"id":3677727,"web_url":"http://patchwork.ozlabs.org/comment/3677727/","msgid":"<20260415-unrushed-collected-562130070d8b@spud>","list_archive_url":null,"date":"2026-04-15T15:19:13","subject":"Re: [PATCH v29 2/4] dt-bindings: i2c: ast2600-i2c.yaml: Add\n global-regs properties","submitter":{"id":84372,"url":"http://patchwork.ozlabs.org/api/people/84372/","name":"Conor Dooley","email":"conor@kernel.org"},"content":"On Wed, Apr 15, 2026 at 01:14:03PM +0800, Ryan Chen wrote:\n> Add the aspeed,global-regs phandle to reference the AST2600 global\n> registers syscon node, containing the SoC-common I2C register set.\n> \n> These properties apply only to the AST2600 binding. Legacy DTs remain\n> unchanged.\n> \n> Signed-off-by: Ryan Chen \n\nI hate to do it to you on v29, but can you please explain what this\n\"soc-common i2c register set\" actually is/does in your commit message.\nThe patch seems fine, so with that\nAcked-by: Conor Dooley \npw-bot: not-applicable\n\n> ---\n> Changes in v29:\n> - remove aspeed,enable-dma properties.\n> \n> Changes in v28:\n> - update commit message correspond with aspeed,enable-dma.\n> - remove aspeed,transfer-mode and add aspeed,enable-dma property and\n> description.\n> - Fix aspeed,enable-dma description to reflect hardware capability rather\n> than software behavior\n> \n> Changes in v27:\n> - change aspeed,transfer-mode to aspeed,enable-dma.\n> ---\n> Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml | 7 +++++++\n> 1 file changed, 7 insertions(+)\n> \n> diff --git a/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml b/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml\n> index de2c359037da..0c769efb76a5 100644\n> --- a/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml\n> +++ b/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml\n> @@ -37,6 +37,12 @@ properties:\n> resets:\n> maxItems: 1\n> \n> + aspeed,global-regs:\n> + $ref: /schemas/types.yaml#/definitions/phandle\n> + description:\n> + Phandle reference to the i2c global syscon node, containing the\n> + SoC-common i2c register set.\n> +\n> required:\n> - reg\n> - compatible\n> @@ -59,4 +65,5 @@ examples:\n> resets = <&syscon ASPEED_RESET_I2C>;\n> clock-frequency = <100000>;\n> interrupts = ;\n> + aspeed,global-regs = <&i2c_global>;\n> };\n> \n> -- \n> 2.34.1\n>","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-aspeed@lists.ozlabs.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=bS4AIlrT;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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lists.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org;\n dkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=bS4AIlrT; dkim-atps=neutral;\n spf=pass (client-ip=172.234.252.31; helo=sea.source.kernel.org;\n envelope-from=conor@kernel.org;\n receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1776266358;\n\tbh=C2CEKkmCH9aV17LYLLM5/3fFEfH0fiYdFqoFdPLbCN4=;\n\th=Date:From:To:Cc:Subject:References:In-Reply-To:From;\n\tb=bS4AIlrTVya99sPUUaSqchJnoC6rYci6Xzps/4CQD2kUYYTmQDqXTctvL4FGXcCzN\n\t X2IMTtcMBZa1NoBprs5sXGpMnltuGHDSD9onfKIKmRwOLCKIhTrX4VGTkJ9y1Ewjr7\n\t jwJXWgWa9sfdD+xI8InH8vG3rho7h10owTtFx/8RPxFFImdgU6Z4lo3RgaPRSMg3S+\n\t 48jQ4ZE2kL+PI+CEk2JqSXD5+PZ5Rz97yOjVAPANdEA567ruWCca51wpQmDpWBvV9T\n\t BEZ0NLRsjjZ0M1/L1Wqjr6NkZDOPzQiKBhADFn+WcQoQpOQ+zMpqCsbbTFDQTQ8p1x\n\t 6OP7bi0P8k8gg==","Date":"Wed, 15 Apr 2026 16:19:13 +0100","From":"Conor Dooley ","To":"Ryan Chen ","Cc":"jk@codeconstruct.com.au, andriy.shevchenko@linux.intel.com,\n\tAndi Shyti , Rob Herring ,\n\tKrzysztof Kozlowski ,\n\tConor Dooley , Joel Stanley ,\n\tAndrew Jeffery ,\n\tBenjamin Herrenschmidt ,\n\tRayn Chen ,\n\tPhilipp Zabel , linux-i2c@vger.kernel.org,\n\tdevicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,\n\tlinux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org,\n\topenbmc@lists.ozlabs.org","Subject":"Re: [PATCH v29 2/4] dt-bindings: i2c: ast2600-i2c.yaml: Add\n global-regs properties","Message-ID":"<20260415-unrushed-collected-562130070d8b@spud>","References":"<20260415-upstream_i2c-v29-0-317c1a905ae1@aspeedtech.com>\n <20260415-upstream_i2c-v29-2-317c1a905ae1@aspeedtech.com>","X-Mailing-List":"linux-aspeed@lists.ozlabs.org","List-Id":"","List-Help":"","List-Owner":"","List-Post":"","List-Archive":",\n ","List-Subscribe":",\n ,\n ","List-Unsubscribe":"","Precedence":"list","MIME-Version":"1.0","Content-Type":"multipart/signed; micalg=pgp-sha512;\n\tprotocol=\"application/pgp-signature\"; boundary=\"k6I7hnG3lmH5OCNw\"","Content-Disposition":"inline","In-Reply-To":"<20260415-upstream_i2c-v29-2-317c1a905ae1@aspeedtech.com>","X-Spam-Status":"No, score=-0.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS\n\tautolearn=disabled version=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"}},{"id":3677897,"web_url":"http://patchwork.ozlabs.org/comment/3677897/","msgid":"","list_archive_url":null,"date":"2026-04-16T01:38:01","subject":"RE: [PATCH v29 2/4] dt-bindings: i2c: ast2600-i2c.yaml: Add\n global-regs properties","submitter":{"id":71489,"url":"http://patchwork.ozlabs.org/api/people/71489/","name":"Ryan Chen","email":"ryan_chen@aspeedtech.com"},"content":"> Subject: Re: [PATCH v29 2/4] dt-bindings: i2c: ast2600-i2c.yaml: Add global-regs\n> properties\n> \n> On Wed, Apr 15, 2026 at 01:14:03PM +0800, Ryan Chen wrote:\n> > Add the aspeed,global-regs phandle to reference the AST2600 global\n> > registers syscon node, containing the SoC-common I2C register set.\n> >\n> > These properties apply only to the AST2600 binding. Legacy DTs remain\n> > unchanged.\n> >\n> > Signed-off-by: Ryan Chen \n> \n> I hate to do it to you on v29, but can you please explain what this\n> \"soc-common i2c register set\" actually is/does in your commit message.\n\nThanks your review.\nThe common means this global register is common register have common\nregister control used by all i2c bus.\nSuch like register layout mode (new vs. legacy) and shared base clock dividers.\n\n> The patch seems fine, so with that\n> Acked-by: Conor Dooley \n> pw-bot: not-applicable\n> \n> > ---\n> > Changes in v29:\n> > - remove aspeed,enable-dma properties.\n> >\n> > Changes in v28:\n> > - update commit message correspond with aspeed,enable-dma.\n> > - remove aspeed,transfer-mode and add aspeed,enable-dma property and\n> > description.\n> > - Fix aspeed,enable-dma description to reflect hardware capability rather\n> > than software behavior\n> >\n> > Changes in v27:\n> > - change aspeed,transfer-mode to aspeed,enable-dma.\n> > ---\n> > Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml | 7\n> > +++++++\n> > 1 file changed, 7 insertions(+)\n> >\n> > diff --git\n> > a/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml\n> > b/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml\n> > index de2c359037da..0c769efb76a5 100644\n> > --- a/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml\n> > +++ b/Documentation/devicetree/bindings/i2c/aspeed,ast2600-i2c.yaml\n> > @@ -37,6 +37,12 @@ properties:\n> > resets:\n> > maxItems: 1\n> >\n> > + aspeed,global-regs:\n> > + $ref: /schemas/types.yaml#/definitions/phandle\n> > + description:\n> > + Phandle reference to the i2c global syscon node, containing the\n> > + SoC-common i2c register set.\n> > +\n> > required:\n> > - reg\n> > - compatible\n> > @@ -59,4 +65,5 @@ examples:\n> > resets = <&syscon ASPEED_RESET_I2C>;\n> > clock-frequency = <100000>;\n> > interrupts = ;\n> > + aspeed,global-regs = <&i2c_global>;\n> > };\n> >\n> > --\n> > 2.34.1\n> >","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-aspeed@lists.ozlabs.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=aspeedtech.com header.i=@aspeedtech.com\n header.a=rsa-sha256 header.s=selector1 header.b=hTNhTC86;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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