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Message-ID: <CY4PR04MB0567A424CBEFF7F3338EF320CB189@CY4PR04MB0567.namprd04.prod.outlook.com>
Date: Wed, 23 Mar 2022 07:59:12 -0700
From: Jonathan Bakker <xc-racer2@...e.ca>
To: Krzysztof Kozlowski <krzk@...nel.org>, alim.akhtar@...sung.com
Cc: robh+dt@...nel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/7] ARM: dts: s5pv210: Split memory nodes to match spec
Hi Krzysztof,
On 2022-03-23 3:54 a.m., Krzysztof Kozlowski wrote:
> On 22/03/2022 21:11, Jonathan Bakker wrote:
>> Memory nodes should only have a singular reg property in them, so
>> split the memory nodes such that there is only per node.
>>
>> Signed-off-by: Jonathan Bakker <xc-racer2@...e.ca>
>> ---
>> arch/arm/boot/dts/s5pv210-aquila.dts | 8 ++++++--
>> arch/arm/boot/dts/s5pv210-aries.dtsi | 14 +++++++++++---
>> arch/arm/boot/dts/s5pv210-goni.dts | 14 +++++++++++---
>> 3 files changed, 28 insertions(+), 8 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/s5pv210-aquila.dts b/arch/arm/boot/dts/s5pv210-aquila.dts
>> index 6423348034b6..6984479ddba3 100644
>> --- a/arch/arm/boot/dts/s5pv210-aquila.dts
>> +++ b/arch/arm/boot/dts/s5pv210-aquila.dts
>> @@ -29,8 +29,12 @@
>>
>> memory@...00000 {
>> device_type = "memory";
>> - reg = <0x30000000 0x05000000
>> - 0x40000000 0x18000000>;
>> + reg = <0x30000000 0x05000000>;
>> + };
>> +
>> + memory@...00000 {
>> + device_type = "memory";
>> + reg = <0x40000000 0x18000000>;
>> };
>>
>> pmic_ap_clk: clock-0 {
>> diff --git a/arch/arm/boot/dts/s5pv210-aries.dtsi b/arch/arm/boot/dts/s5pv210-aries.dtsi
>> index 160f8cd9a68d..70ff56daf4cb 100644
>> --- a/arch/arm/boot/dts/s5pv210-aries.dtsi
>> +++ b/arch/arm/boot/dts/s5pv210-aries.dtsi
>> @@ -24,9 +24,17 @@
>>
>> memory@...00000 {
>> device_type = "memory";
>> - reg = <0x30000000 0x05000000
>> - 0x40000000 0x10000000
>> - 0x50000000 0x08000000>;
>
> 0x40000000 to 0x58000000 is continues, so I wonder why it is split? Look
> at Aquila DTS.
>
>
Yes, it was split in the vendor kernel as well [1], and that's been continued along
here. I personally don't see a reason to keep it split, but there might be something
I'm not aware of.
Thanks,
Jonathan
[1] https://github.com/xc-racer99/blastoff_kernel_samsung_galaxys4g/blob/gingerbread/arch/arm/mach-s5pv210/mach-herring.c#L4116
>
> Best regards,
> Krzysztof
>
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