Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <9961d579-9463-c585-34a6-a3abcd4b3e52@linaro.org>
Date:   Wed, 23 Nov 2022 14:27:33 +0100
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.4.2
Reply-To: neil.armstrong@linaro.org
Subject: Re: [PATCH V5 4/4] arm64: dts: meson: add S4 Soc Peripheral clock
 controller in DT
Content-Language: en-US
To:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        Yu Tu <yu.tu@amlogic.com>, linux-clk@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org,
        linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org,
        devicetree@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
        Neil Armstrong <narmstrong@linaro.org>,
        Jerome Brunet <jbrunet@baylibre.com>,
        Kevin Hilman <khilman@baylibre.com>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc:     kelvin.zhang@amlogic.com
References: <20221123021346.18136-1-yu.tu@amlogic.com>
 <20221123021346.18136-5-yu.tu@amlogic.com>
 <ae43fadf-9255-7db7-8b5e-01200e02a2c6@linaro.org>
From:   Neil Armstrong <neil.armstrong@linaro.org>
Organization: Linaro Developer Services
In-Reply-To: <ae43fadf-9255-7db7-8b5e-01200e02a2c6@linaro.org>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: bulk

On 23/11/2022 11:10, Krzysztof Kozlowski wrote:
> On 23/11/2022 03:13, Yu Tu wrote:
>> Added information about the S4 SOC Peripheral Clock controller in DT.
>>
>> Signed-off-by: Yu Tu <yu.tu@amlogic.com>
>> ---
>>   arch/arm64/boot/dts/amlogic/meson-s4.dtsi | 26 +++++++++++++++++++++++
>>   1 file changed, 26 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
>> index bd9c2ef83314..e7fab6e400be 100644
>> --- a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
>> +++ b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
>> @@ -6,6 +6,8 @@
>>   #include <dt-bindings/interrupt-controller/irq.h>
>>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>>   #include <dt-bindings/gpio/gpio.h>
>> +#include <dt-bindings/clock/amlogic,s4-pll-clkc.h>
>> +#include <dt-bindings/clock/amlogic,s4-peripherals-clkc.h>
>>   
>>   / {
>>   	cpus {
>> @@ -100,6 +102,30 @@ clkc_pll: clock-controller@8000 {
>>   				#clock-cells = <1>;
>>   			};
>>   
>> +			clkc_periphs: clock-controller {
>> +				compatible = "amlogic,s4-peripherals-clkc";
>> +				reg = <0x0 0x0 0x0 0x49c>;
> 
> This is broken... did you check for warnings?

This is actually fine, the parent node has a ranges property:
https://github.com/torvalds/linux/blob/eb7081409f94a9a8608593d0fb63a1aa3d6f95d8/arch/arm64/boot/dts/amlogic/meson-s4.dtsi#L93

Neil

> 
> 
> Best regards,
> Krzysztof
> 
> 
> _______________________________________________
> linux-amlogic mailing list
> linux-amlogic@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-amlogic