linux-kernel - Re: [PATCH v2 2/2] arm64: dts: ti: k3-am625-sk: Enable Type-C port for USB0

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Date:   Tue, 28 Mar 2023 16:52:34 -0500
From:   Nishanth Menon <nm@...com>
To:     Roger Quadros <rogerq@...nel.org>
CC:     <vigneshr@...com>, <kristo@...nel.org>, <srk@...com>,
        <r-gunasekaran@...com>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] arm64: dts: ti: k3-am625-sk: Enable Type-C port
 for USB0

On 22:46-20230328, Roger Quadros wrote:
[...]
> >>> 	How about sk-lp ?
> >>
> >> moved it to sk-lp. see above in this patch.
> >>
> > 
> > A bit confused. Looking at [1] vs [2], it seems to indicate pd controller at
> > 0x3f as well? Am I misreading the schematics?
> > 
> > [1] https://www.ti.com/tool/SK-AM62-LP#design-files
> > [2] https://www.ti.com/tool/SK-AM62#design-files
> 
> Yes PD controller is at 0x3f for both boards but IRQ is not routed on AM62-LP.
> I tried to explain this the cover letter. ;)
> 
> Pasting here for convenience.
> 
> > Although k3-am625-lp-sk USB is exactly the same as on k3-am625-sk,
> > it is missing the IRQ line from Type-C chip which is currently
> > required as per chip's DT binding. So we don't add Type-C support
> > for k3-am625-lp-sk till h/w is fixed or polling mode support for
> > Type-C chip is accepted [2]
> > 
> > [2] - https://lore.kernel.org/lkml/20230324133741.43408-1-rogerq@kernel.org/T/

Thanks, This thread does seem to be progressing? Since LP-SK is already
in production, it might do good to hold on to this series a little
longer instead of shuttling dts nodes back and forth.

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D