linux-kernel - Re: [PATCH v2 3/3] riscv: dts: starfive: Drop unused properties and limit frquency

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Message-ID: <d6bf4465-28a7-418f-47c9-7189fa746ca0@starfivetech.com>
Date:   Wed, 13 Sep 2023 18:50:31 +0800
From:   William Qiu <william.qiu@...rfivetech.com>
To:     Emil Renner Berthing <emil.renner.berthing@...onical.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <linux-mmc@...r.kernel.org>
CC:     Emil Renner Berthing <kernel@...il.dk>,
        Rob Herring <robh+dt@...nel.org>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        "Palmer Dabbelt" <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>
Subject: Re: [PATCH v2 3/3] riscv: dts: starfive: Drop unused properties and
 limit frquency


On 2023/9/12 21:23, Emil Renner Berthing wrote:
> William Qiu wrote:
>> Drop unused properties and limit cclk_in to 50M, thus cancelling the
>> internal frequency and adopting the by-pass mode.
> 
> That's two unrelated changes which should really be in different patches. But
> again the hardware still has the relevant field in the syscon registers even if
> the driver doesn't use it, so maybe just leave them and just keep this patch
> adding the assigned-clock* properties.
> 
> /Emil
> 
>>
Will update.

Best Regards,
William
>> Signed-off-by: William Qiu <william.qiu@...rfivetech.com>
>> ---
>>  .../riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi | 4 ++++
>>  arch/riscv/boot/dts/starfive/jh7110.dtsi                      | 2 --
>>  2 files changed, 4 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
>> index d79f94432b27..d1f2ec308bca 100644
>> --- a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
>> +++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
>> @@ -205,6 +205,8 @@ &i2c6 {
>>
>>  &mmc0 {
>>  	max-frequency = <100000000>;
>> +	assigned-clocks = <&syscrg JH7110_SYSCLK_SDIO0_SDCARD>;
>> +	assigned-clock-rates = <50000000>;
>>  	bus-width = <8>;
>>  	cap-mmc-highspeed;
>>  	mmc-ddr-1_8v;
>> @@ -221,6 +223,8 @@ &mmc0 {
>>
>>  &mmc1 {
>>  	max-frequency = <100000000>;
>> +	assigned-clocks = <&syscrg JH7110_SYSCLK_SDIO1_SDCARD>;
>> +	assigned-clock-rates = <50000000>;
>>  	bus-width = <4>;
>>  	no-sdio;
>>  	no-mmc;
>> diff --git a/arch/riscv/boot/dts/starfive/jh7110.dtsi b/arch/riscv/boot/dts/starfive/jh7110.dtsi
>> index e85464c328d0..7b8e841aeef8 100644
>> --- a/arch/riscv/boot/dts/starfive/jh7110.dtsi
>> +++ b/arch/riscv/boot/dts/starfive/jh7110.dtsi
>> @@ -870,7 +870,6 @@ mmc0: mmc@...10000 {
>>  			fifo-depth = <32>;
>>  			fifo-watermark-aligned;
>>  			data-addr = <0>;
>> -			starfive,sysreg = <&sys_syscon 0x14 0x1a 0x7c000000>;
>>  			status = "disabled";
>>  		};
>>
>> @@ -886,7 +885,6 @@ mmc1: mmc@...20000 {
>>  			fifo-depth = <32>;
>>  			fifo-watermark-aligned;
>>  			data-addr = <0>;
>> -			starfive,sysreg = <&sys_syscon 0x9c 0x1 0x3e>;
>>  			status = "disabled";
>>  		};
>>
>> --
>> 2.34.1
>>
>>
>> _______________________________________________
>> linux-riscv mailing list
>> linux-riscv@...ts.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-riscv

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