linux-kernel - Re: [PATCH 3/9] ARM: dts: update dts files for bcmbca SoC BCM63138

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Date:   Wed, 6 Jul 2022 15:07:45 -0700
From:   William Zhang <william.zhang@...adcom.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Linux ARM List <linux-arm-kernel@...ts.infradead.org>
Cc:     joel.peshkin@...adcom.com, kursad.oney@...adcom.com,
        f.fainelli@...il.com, anand.gore@...adcom.com,
        Broadcom Kernel List <bcm-kernel-feedback-list@...adcom.com>,
        philippe.reynes@...tathome.com, dan.beygelman@...adcom.com,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/9] ARM: dts: update dts files for bcmbca SoC BCM63138



On 7/6/22 00:54, Krzysztof Kozlowski wrote:
> On 05/07/2022 19:26, William Zhang wrote:
>> Update compatible string and UART node and clock name based on device tree
>> binding documents.
>>
>> Signed-off-by: William Zhang <william.zhang@...adcom.com>
>> ---
>>
>>   arch/arm/boot/dts/bcm63138.dtsi    | 18 +++++++++---------
>>   arch/arm/boot/dts/bcm963138dvt.dts |  8 ++++----
>>   2 files changed, 13 insertions(+), 13 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/bcm63138.dtsi b/arch/arm/boot/dts/bcm63138.dtsi
>> index cca49a2e2d62..bec13ed9f73b 100644
>> --- a/arch/arm/boot/dts/bcm63138.dtsi
>> +++ b/arch/arm/boot/dts/bcm63138.dtsi
>> @@ -9,13 +9,13 @@
>>   / {
>>   	#address-cells = <1>;
>>   	#size-cells = <1>;
>> -	compatible = "brcm,bcm63138";
>> -	model = "Broadcom BCM63138 DSL SoC";
>> +	compatible = "brcm,bcm63138", "brcm,bcmbca";
> 
> Changing compatibles affects ABI, so you should not combine it with some
> node renaming/cleanup patch. Split these.
> 
>> +	model = "Broadcom BCM963138 Reference Board";
>>   	interrupt-parent = <&gic>;
>>   
>>   	aliases {
>> -		uart0 = &serial0;
>> -		uart1 = &serial1;
>> +		serial0 = &uart0;
>> +		serial1 = &uart1;
>>   	};
>>   
>>   	cpus {
>> @@ -174,7 +174,7 @@ sata_phy0: sata-phy@0 {
>>   	};
>>   
>>   	/* Legacy UBUS base */
>> -	ubus@...e8000 {
>> +	bus@...e8000 {
>>   		compatible = "simple-bus";
>>   		#address-cells = <1>;
>>   		#size-cells = <1>;
>> @@ -185,21 +185,21 @@ timer: timer@80 {
>>   			reg = <0x80 0x3c>;
>>   		};
>>   
>> -		serial0: serial@600 {
>> +		uart0: serial@600 {
>>   			compatible = "brcm,bcm6345-uart";
>>   			reg = <0x600 0x1b>;
>>   			interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
>>   			clocks = <&periph_clk>;
>> -			clock-names = "periph";
>> +			clock-names = "refclk";
>>   			status = "disabled";
>>   		};
>>   
>> -		serial1: serial@620 {
>> +		uart1: serial@620 {
>>   			compatible = "brcm,bcm6345-uart";
>>   			reg = <0x620 0x1b>;
>>   			interrupts = <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>;
>>   			clocks = <&periph_clk>;
>> -			clock-names = "periph";
>> +			clock-names = "refclk";
> 
> This is even more confusing. You now rename clock-names. How is this
> related to board compatible or to node names?
Not related to board compatible string but it is the same board dts file 
that require some updates.  Anyway I don't have to change anything else 
other than the compatible string for this patchset.  So I will revert 
those changes.
> 
> 
> 
> Best regards,
> Krzysztof

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