linux-kernel - Re: [PATCH v2 1/3] soc: samsung: exynos-chipid: Pass revision reg offsets

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Date:   Thu, 14 Oct 2021 13:44:03 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Sam Protsenko <semen.protsenko@...aro.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Linux Samsung SOC <linux-samsung-soc@...r.kernel.org>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/3] soc: samsung: exynos-chipid: Pass revision reg
 offsets

On 14/10/2021 13:25, Sam Protsenko wrote:
> On Thu, 14 Oct 2021 at 09:41, Krzysztof Kozlowski
> <krzysztof.kozlowski@...onical.com> wrote:
>>
>> On 13/10/2021 22:21, Sam Protsenko wrote:
>>> Old Exynos SoCs have both Product ID and Revision ID in one single
>>> register, while new SoCs tend to have two separate registers for those
>>> IDs. Implement handling of both cases by passing Revision ID register
>>> offsets in driver data.
>>>
>>> Signed-off-by: Sam Protsenko <semen.protsenko@...aro.org>
>>> ---
>>>  drivers/soc/samsung/exynos-chipid.c       | 67 +++++++++++++++++++----
>>>  include/linux/soc/samsung/exynos-chipid.h |  6 +-
>>>  2 files changed, 58 insertions(+), 15 deletions(-)
>>>
>>> diff --git a/drivers/soc/samsung/exynos-chipid.c b/drivers/soc/samsung/exynos-chipid.c
>>> index 5c1d0f97f766..7837331fb753 100644
>>> --- a/drivers/soc/samsung/exynos-chipid.c
>>> +++ b/drivers/soc/samsung/exynos-chipid.c
>>> @@ -16,6 +16,7 @@
>>>  #include <linux/errno.h>
>>>  #include <linux/mfd/syscon.h>
>>>  #include <linux/of.h>
>>> +#include <linux/of_device.h>
>>>  #include <linux/platform_device.h>
>>>  #include <linux/regmap.h>
>>>  #include <linux/slab.h>
>>> @@ -24,6 +25,17 @@
>>
>> Include a changelog please. Your patch does not apply and there is no
>> information on tree which it was based on.
>>
> 
> Sorry, my bad. Will do in v3. As for the tree: it's based on the
> latest mainline/master. I'll double check if patches apply correctly
> to that before sending v3. Please let me know if you want me to rebase
> this series on top of some other tree.

Mainline/master won't work in most of the cases. You need to rebase your
work on maintainer's tree. This is sometimes tricky, so usually it's
enough to base on linux-next.

In this case, either use linux-next or for-next branch of my tree:
https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux.git/

Best regards,
Krzysztof