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Message-ID: <Zn0NbIvFdfpMPHAx@dragon>
Date: Thu, 27 Jun 2024 14:57:48 +0800
From: Shawn Guo <shawnguo2@...h.net>
To: Francesco Dolcini <francesco@...cini.it>
Cc: Vitor Soares <ivitro@...il.com>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Vitor Soares <vitor.soares@...adex.com>, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] arm64: dts: imx8mm-verdin: add TPM device

On Mon, Jun 17, 2024 at 09:18:42AM +0200, Francesco Dolcini wrote:
> Hello Shawn,
> 
> On Mon, Jun 17, 2024 at 10:33:50AM +0800, Shawn Guo wrote:
> > On Thu, Jun 13, 2024 at 02:41:50PM +0100, Vitor Soares wrote:
> > > From: Vitor Soares <vitor.soares@...adex.com>
> > > 
> > > Add TPM device found on Verdin iMX8M Mini PID4 0090 variant.
> > > 
> > > Signed-off-by: Vitor Soares <vitor.soares@...adex.com>
> > > ---
> > >  arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi | 16 +++++++++++-----
> > >  1 file changed, 11 insertions(+), 5 deletions(-)
> > > 
> > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
> > > index 4768b05fd765..c9ae5f0bb526 100644
> > > --- a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
> > > +++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi
> > > @@ -227,15 +227,16 @@ &ecspi2 {
> > >  	pinctrl-0 = <&pinctrl_ecspi2>;
> > >  };
> > >  
> > > -/* Verdin CAN_1 (On-module) */
> > > +/* On-module SPI */
> > >  &ecspi3 {
> > >  	#address-cells = <1>;
> > >  	#size-cells = <0>;
> > > -	cs-gpios = <&gpio5 25 GPIO_ACTIVE_LOW>;
> > > +	cs-gpios = <&gpio5 25 GPIO_ACTIVE_LOW>, <&gpio4 19 GPIO_ACTIVE_LOW>;
> > >  	pinctrl-names = "default";
> > > -	pinctrl-0 = <&pinctrl_ecspi3>;
> > > +	pinctrl-0 = <&pinctrl_ecspi3>, <&pinctrl_pmic_tpm_ena>;
> > 
> > Would it make more sense to have tpm pinctrl in node tpm@1 below?
> It's the pinctrl of the SPI Chip Select pin, not something about the
> TPM, I think it's correct to have it into the ecspi node.

The name pinctrl_pmic_tpm_ena seems confusing then.

Shawn


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