linux-kernel - RE: [PATCH v6 3/5] thermal: renesas: rzg3e: Add thermal driver for the Renesas RZ/G3E SoC

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Message-ID:
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Date: Tue, 5 Aug 2025 08:27:49 +0000
From: John Madieu <john.madieu.xa@...renesas.com>
To: geert <geert@...ux-m68k.org>
CC: "conor+dt@...nel.org" <conor+dt@...nel.org>, "daniel.lezcano@...aro.org"
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	<niklas.soderlund+renesas@...natech.se>
Subject: RE: [PATCH v6 3/5] thermal: renesas: rzg3e: Add thermal driver for
 the Renesas RZ/G3E SoC

Hi Geert,

Thanks for your review!

> -----Original Message-----
> From: Geert Uytterhoeven <geert@...ux-m68k.org>
> Sent: Monday, August 4, 2025 11:28 AM
> To: John Madieu <john.madieu.xa@...renesas.com>
> Subject: Re: [PATCH v6 3/5] thermal: renesas: rzg3e: Add thermal driver for
> the Renesas RZ/G3E SoC
> 
> Hi John,
> 
> On Thu, 22 May 2025 at 20:23, John Madieu <john.madieu.xa@...renesas.com>
> wrote:
> > The RZ/G3E SoC integrates a Temperature Sensor Unit (TSU) block
> > designed to monitor the chip's junction temperature. This sensor is
> > connected to channel 1 of the APB port clock/reset and provides
> temperature measurements.
> >
> > It also requires calibration values stored in the system controller
> > registers for accurate temperature measurement. Add a driver for the
> Renesas RZ/G3E TSU.
> >
> > Signed-off-by: John Madieu <john.madieu.xa@...renesas.com>
> 
> Thanks for your patch!
> 
> The TSUs in RZ/V2H and RZ/V2N seem to be identical to the one in RZ/G3E.
> However, RZ/V2H and RZ/V2N have two instances, while RZ/G3 has only one.
> 

This is true.

> > --- /dev/null
> > +++ b/drivers/thermal/renesas/rzg3e_thermal.c
> > @@ -0,0 +1,443 @@
> 
> > +/* SYS Trimming register offsets macro */ #define SYS_TSU_TRMVAL(x)
> > +(0x330 + (x) * 4)
> 
> RZ/V2H and RZ/V2N have a second set of trim values for the second TSU
> instance.  So I guess you want to specify the offset in DT instead.
> 

What do you think of 'renesas,tsu-channel' property or alike
Property to specify the channel being used ?

> Gr{oetje,eeting}s,
> 
>                         Geert
> 

Regards,
John

> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-
> m68k.org
> 
> In personal conversations with technical people, I call myself a hacker.
> But when I'm talking to journalists I just say "programmer" or something
> like that.
>                                 -- Linus Torvalds