linux-kernel - Re: [PATCH v6 5/7] riscv: dts: thead: Add TH1520 mmc controllers and sdhci clock

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Message-ID: <ZVTiFVHSsBxk3pLH@xhacker>
Date:   Wed, 15 Nov 2023 23:21:57 +0800
From:   Jisheng Zhang <jszhang@...nel.org>
To:     Drew Fustini <dfustini@...libre.com>
Cc:     Conor Dooley <conor@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>, Guo Ren <guoren@...nel.org>,
        Fu Wei <wefu@...hat.com>, linux-mmc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v6 5/7] riscv: dts: thead: Add TH1520 mmc controllers and
 sdhci clock

On Tue, Nov 14, 2023 at 05:30:26PM -0500, Drew Fustini wrote:
> On Tue, Nov 14, 2023 at 09:27:44PM +0000, Conor Dooley wrote:
> > On Tue, Nov 14, 2023 at 04:07:59PM -0500, Drew Fustini wrote:
> > 
> > > +	sdhci_clk: sdhci-clock {
> > > +		compatible = "fixed-clock";
> > > +		clock-frequency = <198000000>;
> > > +		clock-output-names = "sdhci_clk";
> > > +		#clock-cells = <0>;
> > > +	};
> > 
> > If only you had a clock driver to provide these...
> > 
> > Is someone working on a resubmission of the clock driver?
> 
> Yangtao Li posted an initial revision back [1] in May but I don't think
> there has been any follow up. It is for sure something we need to have
> in mainline so I'll take a look at getting that effort going again.

Hi Drew,

Based on Yangtao's version, I cooked an updated version in last
development window but still can't complete it and met some issues
which need the clk/pll register document.
IIRC, the document was released a few days ago before soc tree frozen.

It's nice if you can continue the effort! I'll read the sdhci driver
soon.

Thanks
> 
> Drew
> 
> [1] https://lore.kernel.org/linux-riscv/20230515054402.27633-1-frank.li@vivo.com/