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Sun, 30 Aug 2026 23:34:05 -0700 (PDT) Message-ID: <4dafc090-4e2d-4f05-85ce-cba993e93575@gmail.com> Date: Mon, 31 Aug 2026 14:33:57 +0800 Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] arm64: dts: imx8mp-phyboard-pollux-peb-av-10: Fix SAI master assignment To: Primoz Fiser , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Peng Fan , Yannic Moog , Shawn Guo Cc: devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, upstream@lists.phytec.de References: <20260831051222.3298730-1-primoz.fiser@norik.com> Content-Language: en-US From: Chancel Liu In-Reply-To: <20260831051222.3298730-1-primoz.fiser@norik.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit > The dailink_master label was placed on the codec sub-node instead of > the CPU sub-node, configuring the codec as I2S bitclock/frame master > with SAI2 as slave. On this board, BCLK and LRCLK are wired the other > way around: SAI2 must be bus master, with the codec as I2S slave. > > Move dailink_master to the CPU sub-node so SAI2 drives BCLK and LRCLK, > fixing broken audio on the PHYTEC phyBOARD-Pollux-i.MX8MP board with > PEB-AV-10 Audio/Video expansion board. Also remove the spurious clocks > property from the codec sub-node, which had no effect in this topology. > > Fixes: 7012f551081f ("arm64: dts: imx8mp pollux: add expansion board overlay") > Signed-off-by: Primoz Fiser Reviewed-by: Chancel Liu Regards, Chancel Liu > --- > Changes in v2: > - reword commit message to avoid topology confusion > > Link to v1: https://lore.kernel.org/all/20260827065556.2326079-1-primoz.fiser@norik.com/ > > .../boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi > index bb740f845855..8957b24a7ad2 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-peb-av-10.dtsi > @@ -77,13 +77,12 @@ sound { > "MIC3R", "Microphone Jack", > "Microphone Jack", "Mic Bias"; > > - simple-audio-card,cpu { > + dailink_master: simple-audio-card,cpu { > sound-dai = <&sai2>; > }; > > - dailink_master: simple-audio-card,codec { > + simple-audio-card,codec { > sound-dai = <&codec>; > - clocks = <&clk IMX8MP_CLK_SAI2>; > }; > }; > };