[PATCH v2 1/4] arm64: dts: imx93-var-som-symphony: add TPM support

Stefano Radaelli stefano.radaelli21 at gmail.com
Wed Jun 3 01:10:38 PDT 2026


On Mon, Jun 01, 2026 at 04:48:50PM -0400, Frank Li wrote:
> On Fri, May 29, 2026 at 12:52:44PM +0200, Stefano Radaelli wrote:
> > From: Stefano Radaelli <stefano.r at variscite.com>
> >
> > Add the ST33KTPM2XI2C TPM device on the Symphony carrier board.
> >
> > The TPM enable line is a board-level signal driven through the PCAL6408
> > GPIO expander. Keep it asserted with a GPIO hog so the TPM is enabled on
> > this board.
> >
> > The TPM binding does not provide a dedicated enable GPIO or supply
> > property, so this cannot currently be expressed as a direct TPM
> > dependency.
> 
> there are reset/reset-gpio, can you use it?
> 
> Frank
> >

Hi Frank,

you are right, reset-gpios property will do the job.

I'll send V2 soon,

Thank you,
Stefano



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