Subject: [PATCH v1 0/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC

From: Muhammad Husaini Zulkifli <[email protected]>

Hi.

This patch declares the .clk_ops for Keem Bay SOC due to the
introduction of new clock operations handling.

This was tested with Keem Bay evaluation module board.

Kindly help to review it.

Thank you.

Muhammad Husaini Zulkifli (1):
mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC

drivers/mmc/host/sdhci-of-arasan.c | 3 +++
1 file changed, 3 insertions(+)

--
2.17.1


Subject: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC

From: Muhammad Husaini Zulkifli <[email protected]>

Commit 16ada730a759 ("mmc: sdhci-of-arasan: Modify clock operations handling")
introduces platform specific SDHCI clock operation.

This patch declares the clock operation for Keem Bay.
Add clk_ops for SD, EMMC and SDIO operations.

Fixes: 36c6aadaae86 ("mmc: sdhci-of-arasan: Add support for Intel Keem Bay")

Signed-off-by: Muhammad Husaini Zulkifli <[email protected]>
Reviewed-by: Adrian Hunter <[email protected]>
---
drivers/mmc/host/sdhci-of-arasan.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index 829ccef87426..012d52e1abee 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -1199,16 +1199,19 @@ static struct sdhci_arasan_of_data sdhci_arasan_versal_data = {
static struct sdhci_arasan_of_data intel_keembay_emmc_data = {
.soc_ctl_map = &intel_keembay_soc_ctl_map,
.pdata = &sdhci_keembay_emmc_pdata,
+ .clk_ops = &arasan_clk_ops,
};

static struct sdhci_arasan_of_data intel_keembay_sd_data = {
.soc_ctl_map = &intel_keembay_soc_ctl_map,
.pdata = &sdhci_keembay_sd_pdata,
+ .clk_ops = &arasan_clk_ops,
};

static struct sdhci_arasan_of_data intel_keembay_sdio_data = {
.soc_ctl_map = &intel_keembay_soc_ctl_map,
.pdata = &sdhci_keembay_sdio_pdata,
+ .clk_ops = &arasan_clk_ops,
};

static const struct of_device_id sdhci_arasan_of_match[] = {
--
2.17.1

Subject: RE: [PATCH v1 0/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC

Hi,

I would appreciate hearing your opinion/review on this patch.

Thanks

>-----Original Message-----
>From: Zulkifli, Muhammad Husaini <[email protected]>
>Sent: Friday, November 6, 2020 8:10 PM
>To: [email protected]; [email protected]; linux-
>[email protected]
>Cc: Hunter, Adrian <[email protected]>; Raja Subramanian, Lakshmi
>Bai <[email protected]>; Wan Mohamad, Wan Ahmad
>Zainie <[email protected]>; Zulkifli, Muhammad
>Husaini <[email protected]>;
>[email protected]
>Subject: [PATCH v1 0/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay
>SOC
>
>From: Muhammad Husaini Zulkifli <[email protected]>
>
>Hi.
>
>This patch declares the .clk_ops for Keem Bay SOC due to the introduction of
>new clock operations handling.
>
>This was tested with Keem Bay evaluation module board.
>
>Kindly help to review it.
>
>Thank you.
>
>Muhammad Husaini Zulkifli (1):
> mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC
>
> drivers/mmc/host/sdhci-of-arasan.c | 3 +++
> 1 file changed, 3 insertions(+)
>
>--
>2.17.1

Subject: RE: [PATCH v1 0/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC



>-----Original Message-----
>From: Zulkifli, Muhammad Husaini
>Sent: Friday, November 13, 2020 8:14 AM
>To: '[email protected]' <[email protected]>; 'linux-arm-
>[email protected]' <[email protected]>; 'linux-
>[email protected]' <[email protected]>; 'Ulf Hansson
><[email protected]>' <Ulf Hansson <[email protected]>>
>Cc: Hunter, Adrian <[email protected]>; Raja Subramanian, Lakshmi
>Bai <[email protected]>; Wan Mohamad, Wan Ahmad
>Zainie <[email protected]>;
>'[email protected]' <[email protected]>
>Subject: RE: [PATCH v1 0/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem
>Bay SOC
>
>++ Ulf
>
>>-----Original Message-----
>>From: Zulkifli, Muhammad Husaini
>>Sent: Thursday, November 12, 2020 10:15 PM
>>To: [email protected]; [email protected];
>>linux- [email protected]
>>Cc: Hunter, Adrian <[email protected]>; Raja Subramanian, Lakshmi
>>Bai <[email protected]>; Wan Mohamad, Wan
>Ahmad
>>Zainie <[email protected]>;
>>[email protected]
>>Subject: RE: [PATCH v1 0/1] mmc: sdhci-of-arasan: Specify .clk_ops for
>>Keem Bay SOC
>>
>>Hi,
>>
>>I would appreciate hearing your opinion/review on this patch.
>>
>>Thanks
>>
>>>-----Original Message-----
>>>From: Zulkifli, Muhammad Husaini <[email protected]>
>>>Sent: Friday, November 6, 2020 8:10 PM
>>>To: [email protected]; [email protected];
>>>linux- [email protected]
>>>Cc: Hunter, Adrian <[email protected]>; Raja Subramanian,
>>>Lakshmi Bai <[email protected]>; Wan Mohamad,
>Wan
>>Ahmad
>>>Zainie <[email protected]>; Zulkifli, Muhammad
>>>Husaini <[email protected]>;
>>>[email protected]
>>>Subject: [PATCH v1 0/1] mmc: sdhci-of-arasan: Specify .clk_ops for
>>>Keem Bay SOC
>>>
>>>From: Muhammad Husaini Zulkifli <[email protected]>
>>>
>>>Hi.
>>>
>>>This patch declares the .clk_ops for Keem Bay SOC due to the
>>>introduction of new clock operations handling.
>>>
>>>This was tested with Keem Bay evaluation module board.
>>>
>>>Kindly help to review it.
>>>
>>>Thank you.
>>>
>>>Muhammad Husaini Zulkifli (1):
>>> mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC
>>>
>>> drivers/mmc/host/sdhci-of-arasan.c | 3 +++
>>> 1 file changed, 3 insertions(+)
>>>
>>>--
>>>2.17.1

Subject: RE: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC

Hi Ulf,

Thanks for your review comments. I replied inline

>-----Original Message-----
>From: Ulf Hansson <[email protected]>
>Sent: Monday, November 16, 2020 7:41 PM
>To: Zulkifli, Muhammad Husaini <[email protected]>
>Cc: [email protected]; Linux ARM <linux-arm-
>[email protected]>; Linux Kernel Mailing List <linux-
>[email protected]>; Hunter, Adrian <[email protected]>; Raja
>Subramanian, Lakshmi Bai <[email protected]>; Wan
>Mohamad, Wan Ahmad Zainie
><[email protected]>; David E. Box
><[email protected]>
>Subject: Re: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem
>Bay SOC
>
>On Fri, 6 Nov 2020 at 05:10, <[email protected]> wrote:
>>
>> From: Muhammad Husaini Zulkifli <[email protected]>
>>
>> Commit 16ada730a759 ("mmc: sdhci-of-arasan: Modify clock operations
>> handling") introduces platform specific SDHCI clock operation.
>>
>> This patch declares the clock operation for Keem Bay.
>> Add clk_ops for SD, EMMC and SDIO operations.
>
>The above commit message doesn't really tell why or what goes on here.
>Can please try to clarify that.

We missed out the clock operation handling patch (Commit 16ada730a759)
and did not handle the clk_ops for Keem Bay SOC devices.
These 2 patches (Commit 16ada730a759) and (Commit 36c6aadaae86) are merged at around the same time.
We catch the issue later when trying to boot into v5.10-rc1 with Keem Bay EVM.
That is why I created this patch to handle the clk_ops for Keem Bay devices.

>
>>
>> Fixes: 36c6aadaae86 ("mmc: sdhci-of-arasan: Add support for Intel Keem
>> Bay")
>
>Is $subject patch fixing a bug/regression?

This is to fix issue on previous commit. It is a bug fix.

>
>Kind regards
>Uffe
>
>>
>> Signed-off-by: Muhammad Husaini Zulkifli
>> <[email protected]>
>> Reviewed-by: Adrian Hunter <[email protected]>
>> ---
>> drivers/mmc/host/sdhci-of-arasan.c | 3 +++
>> 1 file changed, 3 insertions(+)
>>
>> diff --git a/drivers/mmc/host/sdhci-of-arasan.c
>> b/drivers/mmc/host/sdhci-of-arasan.c
>> index 829ccef87426..012d52e1abee 100644
>> --- a/drivers/mmc/host/sdhci-of-arasan.c
>> +++ b/drivers/mmc/host/sdhci-of-arasan.c
>> @@ -1199,16 +1199,19 @@ static struct sdhci_arasan_of_data
>> sdhci_arasan_versal_data = { static struct sdhci_arasan_of_data
>intel_keembay_emmc_data = {
>> .soc_ctl_map = &intel_keembay_soc_ctl_map,
>> .pdata = &sdhci_keembay_emmc_pdata,
>> + .clk_ops = &arasan_clk_ops,
>> };
>>
>> static struct sdhci_arasan_of_data intel_keembay_sd_data = {
>> .soc_ctl_map = &intel_keembay_soc_ctl_map,
>> .pdata = &sdhci_keembay_sd_pdata,
>> + .clk_ops = &arasan_clk_ops,
>> };
>>
>> static struct sdhci_arasan_of_data intel_keembay_sdio_data = {
>> .soc_ctl_map = &intel_keembay_soc_ctl_map,
>> .pdata = &sdhci_keembay_sdio_pdata,
>> + .clk_ops = &arasan_clk_ops,
>> };
>>
>> static const struct of_device_id sdhci_arasan_of_match[] = {
>> --
>> 2.17.1
>>

2020-11-16 20:02:39

by Ulf Hansson

[permalink] [raw]
Subject: Re: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC

On Fri, 6 Nov 2020 at 05:10, <[email protected]> wrote:
>
> From: Muhammad Husaini Zulkifli <[email protected]>
>
> Commit 16ada730a759 ("mmc: sdhci-of-arasan: Modify clock operations handling")
> introduces platform specific SDHCI clock operation.
>
> This patch declares the clock operation for Keem Bay.
> Add clk_ops for SD, EMMC and SDIO operations.

The above commit message doesn't really tell why or what goes on here.
Can please try to clarify that.

>
> Fixes: 36c6aadaae86 ("mmc: sdhci-of-arasan: Add support for Intel Keem Bay")

Is $subject patch fixing a bug/regression?

Kind regards
Uffe

>
> Signed-off-by: Muhammad Husaini Zulkifli <[email protected]>
> Reviewed-by: Adrian Hunter <[email protected]>
> ---
> drivers/mmc/host/sdhci-of-arasan.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
> index 829ccef87426..012d52e1abee 100644
> --- a/drivers/mmc/host/sdhci-of-arasan.c
> +++ b/drivers/mmc/host/sdhci-of-arasan.c
> @@ -1199,16 +1199,19 @@ static struct sdhci_arasan_of_data sdhci_arasan_versal_data = {
> static struct sdhci_arasan_of_data intel_keembay_emmc_data = {
> .soc_ctl_map = &intel_keembay_soc_ctl_map,
> .pdata = &sdhci_keembay_emmc_pdata,
> + .clk_ops = &arasan_clk_ops,
> };
>
> static struct sdhci_arasan_of_data intel_keembay_sd_data = {
> .soc_ctl_map = &intel_keembay_soc_ctl_map,
> .pdata = &sdhci_keembay_sd_pdata,
> + .clk_ops = &arasan_clk_ops,
> };
>
> static struct sdhci_arasan_of_data intel_keembay_sdio_data = {
> .soc_ctl_map = &intel_keembay_soc_ctl_map,
> .pdata = &sdhci_keembay_sdio_pdata,
> + .clk_ops = &arasan_clk_ops,
> };
>
> static const struct of_device_id sdhci_arasan_of_match[] = {
> --
> 2.17.1
>

2020-11-17 11:31:41

by Ulf Hansson

[permalink] [raw]
Subject: Re: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC

On Mon, 16 Nov 2020 at 15:22, Zulkifli, Muhammad Husaini
<[email protected]> wrote:
>
> Hi Ulf,
>
> Thanks for your review comments. I replied inline
>
> >-----Original Message-----
> >From: Ulf Hansson <[email protected]>
> >Sent: Monday, November 16, 2020 7:41 PM
> >To: Zulkifli, Muhammad Husaini <[email protected]>
> >Cc: [email protected]; Linux ARM <linux-arm-
> >[email protected]>; Linux Kernel Mailing List <linux-
> >[email protected]>; Hunter, Adrian <[email protected]>; Raja
> >Subramanian, Lakshmi Bai <[email protected]>; Wan
> >Mohamad, Wan Ahmad Zainie
> ><[email protected]>; David E. Box
> ><[email protected]>
> >Subject: Re: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem
> >Bay SOC
> >
> >On Fri, 6 Nov 2020 at 05:10, <[email protected]> wrote:
> >>
> >> From: Muhammad Husaini Zulkifli <[email protected]>
> >>
> >> Commit 16ada730a759 ("mmc: sdhci-of-arasan: Modify clock operations
> >> handling") introduces platform specific SDHCI clock operation.
> >>
> >> This patch declares the clock operation for Keem Bay.
> >> Add clk_ops for SD, EMMC and SDIO operations.
> >
> >The above commit message doesn't really tell why or what goes on here.
> >Can please try to clarify that.
>
> We missed out the clock operation handling patch (Commit 16ada730a759)
> and did not handle the clk_ops for Keem Bay SOC devices.
> These 2 patches (Commit 16ada730a759) and (Commit 36c6aadaae86) are merged at around the same time.
> We catch the issue later when trying to boot into v5.10-rc1 with Keem Bay EVM.
> That is why I created this patch to handle the clk_ops for Keem Bay devices.

Alright, so the previous changes were simply not sufficient to
complete the support.

>
> >
> >>
> >> Fixes: 36c6aadaae86 ("mmc: sdhci-of-arasan: Add support for Intel Keem
> >> Bay")
> >
> >Is $subject patch fixing a bug/regression?
>
> This is to fix issue on previous commit. It is a bug fix.

Has it ever worked?

Did the commit you point to with the fixes tag, break some other
existing functionality?

[...]

Kind regards
Uffe

Subject: RE: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC

Hi Ulf,

>-----Original Message-----
>From: Ulf Hansson <[email protected]>
>Sent: Tuesday, November 17, 2020 7:27 PM
>To: Zulkifli, Muhammad Husaini <[email protected]>
>Cc: [email protected]; Linux ARM <linux-arm-
>[email protected]>; Linux Kernel Mailing List <linux-
>[email protected]>; Hunter, Adrian <[email protected]>; Raja
>Subramanian, Lakshmi Bai <[email protected]>; Wan
>Mohamad, Wan Ahmad Zainie
><[email protected]>; David E. Box
><[email protected]>
>Subject: Re: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay
>SOC
>
>On Mon, 16 Nov 2020 at 15:22, Zulkifli, Muhammad Husaini
><[email protected]> wrote:
>>
>> Hi Ulf,
>>
>> Thanks for your review comments. I replied inline
>>
>> >-----Original Message-----
>> >From: Ulf Hansson <[email protected]>
>> >Sent: Monday, November 16, 2020 7:41 PM
>> >To: Zulkifli, Muhammad Husaini <[email protected]>
>> >Cc: [email protected]; Linux ARM <linux-arm-
>> >[email protected]>; Linux Kernel Mailing List <linux-
>> >[email protected]>; Hunter, Adrian <[email protected]>;
>> >Raja Subramanian, Lakshmi Bai
>> ><[email protected]>; Wan Mohamad, Wan Ahmad
>> >Zainie <[email protected]>; David E. Box
>> ><[email protected]>
>> >Subject: Re: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops
>> >for Keem Bay SOC
>> >
>> >On Fri, 6 Nov 2020 at 05:10, <[email protected]> wrote:
>> >>
>> >> From: Muhammad Husaini Zulkifli
>> >> <[email protected]>
>> >>
>> >> Commit 16ada730a759 ("mmc: sdhci-of-arasan: Modify clock operations
>> >> handling") introduces platform specific SDHCI clock operation.
>> >>
>> >> This patch declares the clock operation for Keem Bay.
>> >> Add clk_ops for SD, EMMC and SDIO operations.
>> >
>> >The above commit message doesn't really tell why or what goes on here.
>> >Can please try to clarify that.
>>
>> We missed out the clock operation handling patch (Commit 16ada730a759)
>> and did not handle the clk_ops for Keem Bay SOC devices.
>> These 2 patches (Commit 16ada730a759) and (Commit 36c6aadaae86) are
>merged at around the same time.
>> We catch the issue later when trying to boot into v5.10-rc1 with Keem Bay
>EVM.
>> That is why I created this patch to handle the clk_ops for Keem Bay devices.
>
>Alright, so the previous changes were simply not sufficient to complete the
>support.
>
>>
>> >
>> >>
>> >> Fixes: 36c6aadaae86 ("mmc: sdhci-of-arasan: Add support for Intel
>> >> Keem
>> >> Bay")
>> >
>> >Is $subject patch fixing a bug/regression?
>>
>> This is to fix issue on previous commit. It is a bug fix.
>
>Has it ever worked?

Yes it is working. Tested with Keem Bay EVM.
SD/EMMC/SDIO devices registered successfully with this fix.

>
>Did the commit you point to with the fixes tag, break some other existing
>functionality?

It should not break other existing functionality.
This is specific for Keem Bay SOC only.

>
>[...]
>
>Kind regards
>Uffe

2020-11-17 17:17:09

by Ulf Hansson

[permalink] [raw]
Subject: Re: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC

On Tue, 17 Nov 2020 at 14:46, Zulkifli, Muhammad Husaini
<[email protected]> wrote:
>
> Hi Ulf,
>
> >-----Original Message-----
> >From: Ulf Hansson <[email protected]>
> >Sent: Tuesday, November 17, 2020 7:27 PM
> >To: Zulkifli, Muhammad Husaini <[email protected]>
> >Cc: [email protected]; Linux ARM <linux-arm-
> >[email protected]>; Linux Kernel Mailing List <linux-
> >[email protected]>; Hunter, Adrian <[email protected]>; Raja
> >Subramanian, Lakshmi Bai <[email protected]>; Wan
> >Mohamad, Wan Ahmad Zainie
> ><[email protected]>; David E. Box
> ><[email protected]>
> >Subject: Re: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay
> >SOC
> >
> >On Mon, 16 Nov 2020 at 15:22, Zulkifli, Muhammad Husaini
> ><[email protected]> wrote:
> >>
> >> Hi Ulf,
> >>
> >> Thanks for your review comments. I replied inline
> >>
> >> >-----Original Message-----
> >> >From: Ulf Hansson <[email protected]>
> >> >Sent: Monday, November 16, 2020 7:41 PM
> >> >To: Zulkifli, Muhammad Husaini <[email protected]>
> >> >Cc: [email protected]; Linux ARM <linux-arm-
> >> >[email protected]>; Linux Kernel Mailing List <linux-
> >> >[email protected]>; Hunter, Adrian <[email protected]>;
> >> >Raja Subramanian, Lakshmi Bai
> >> ><[email protected]>; Wan Mohamad, Wan Ahmad
> >> >Zainie <[email protected]>; David E. Box
> >> ><[email protected]>
> >> >Subject: Re: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops
> >> >for Keem Bay SOC
> >> >
> >> >On Fri, 6 Nov 2020 at 05:10, <[email protected]> wrote:
> >> >>
> >> >> From: Muhammad Husaini Zulkifli
> >> >> <[email protected]>
> >> >>
> >> >> Commit 16ada730a759 ("mmc: sdhci-of-arasan: Modify clock operations
> >> >> handling") introduces platform specific SDHCI clock operation.
> >> >>
> >> >> This patch declares the clock operation for Keem Bay.
> >> >> Add clk_ops for SD, EMMC and SDIO operations.
> >> >
> >> >The above commit message doesn't really tell why or what goes on here.
> >> >Can please try to clarify that.
> >>
> >> We missed out the clock operation handling patch (Commit 16ada730a759)
> >> and did not handle the clk_ops for Keem Bay SOC devices.
> >> These 2 patches (Commit 16ada730a759) and (Commit 36c6aadaae86) are
> >merged at around the same time.
> >> We catch the issue later when trying to boot into v5.10-rc1 with Keem Bay
> >EVM.
> >> That is why I created this patch to handle the clk_ops for Keem Bay devices.
> >
> >Alright, so the previous changes were simply not sufficient to complete the
> >support.
> >
> >>
> >> >
> >> >>
> >> >> Fixes: 36c6aadaae86 ("mmc: sdhci-of-arasan: Add support for Intel
> >> >> Keem
> >> >> Bay")
> >> >
> >> >Is $subject patch fixing a bug/regression?
> >>
> >> This is to fix issue on previous commit. It is a bug fix.
> >
> >Has it ever worked?
>
> Yes it is working. Tested with Keem Bay EVM.
> SD/EMMC/SDIO devices registered successfully with this fix.

I am not asking if $subject patch makes it work, I understand that it does.

>
> >
> >Did the commit you point to with the fixes tag, break some other existing
> >functionality?
>
> It should not break other existing functionality.
> This is specific for Keem Bay SOC only.

So, you are saying that it has never worked for Keem Bay? But $subject
patch makes it work?

Can you please re-spin and update the commit message to better reflect
what goes on, then I can apply.

Kind regards
Uffe

Subject: RE: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay SOC

Hi Ulf,

>-----Original Message-----
>From: Ulf Hansson <[email protected]>
>Sent: Wednesday, November 18, 2020 1:14 AM
>To: Zulkifli, Muhammad Husaini <[email protected]>
>Cc: [email protected]; Linux ARM <linux-arm-
>[email protected]>; Linux Kernel Mailing List <linux-
>[email protected]>; Hunter, Adrian <[email protected]>; Raja
>Subramanian, Lakshmi Bai <[email protected]>; Wan
>Mohamad, Wan Ahmad Zainie
><[email protected]>; David E. Box
><[email protected]>
>Subject: Re: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops for Keem Bay
>SOC
>
>On Tue, 17 Nov 2020 at 14:46, Zulkifli, Muhammad Husaini
><[email protected]> wrote:
>>
>> Hi Ulf,
>>
>> >-----Original Message-----
>> >From: Ulf Hansson <[email protected]>
>> >Sent: Tuesday, November 17, 2020 7:27 PM
>> >To: Zulkifli, Muhammad Husaini <[email protected]>
>> >Cc: [email protected]; Linux ARM <linux-arm-
>> >[email protected]>; Linux Kernel Mailing List <linux-
>> >[email protected]>; Hunter, Adrian <[email protected]>;
>> >Raja Subramanian, Lakshmi Bai
>> ><[email protected]>; Wan Mohamad, Wan Ahmad
>> >Zainie <[email protected]>; David E. Box
>> ><[email protected]>
>> >Subject: Re: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops
>> >for Keem Bay SOC
>> >
>> >On Mon, 16 Nov 2020 at 15:22, Zulkifli, Muhammad Husaini
>> ><[email protected]> wrote:
>> >>
>> >> Hi Ulf,
>> >>
>> >> Thanks for your review comments. I replied inline
>> >>
>> >> >-----Original Message-----
>> >> >From: Ulf Hansson <[email protected]>
>> >> >Sent: Monday, November 16, 2020 7:41 PM
>> >> >To: Zulkifli, Muhammad Husaini
>> >> ><[email protected]>
>> >> >Cc: [email protected]; Linux ARM <linux-arm-
>> >> >[email protected]>; Linux Kernel Mailing List <linux-
>> >> >[email protected]>; Hunter, Adrian <[email protected]>;
>> >> >Raja Subramanian, Lakshmi Bai
>> >> ><[email protected]>; Wan Mohamad, Wan
>Ahmad
>> >> >Zainie <[email protected]>; David E. Box
>> >> ><[email protected]>
>> >> >Subject: Re: [PATCH v1 1/1] mmc: sdhci-of-arasan: Specify .clk_ops
>> >> >for Keem Bay SOC
>> >> >
>> >> >On Fri, 6 Nov 2020 at 05:10, <[email protected]>
>wrote:
>> >> >>
>> >> >> From: Muhammad Husaini Zulkifli
>> >> >> <[email protected]>
>> >> >>
>> >> >> Commit 16ada730a759 ("mmc: sdhci-of-arasan: Modify clock
>> >> >> operations
>> >> >> handling") introduces platform specific SDHCI clock operation.
>> >> >>
>> >> >> This patch declares the clock operation for Keem Bay.
>> >> >> Add clk_ops for SD, EMMC and SDIO operations.
>> >> >
>> >> >The above commit message doesn't really tell why or what goes on here.
>> >> >Can please try to clarify that.
>> >>
>> >> We missed out the clock operation handling patch (Commit
>> >> 16ada730a759) and did not handle the clk_ops for Keem Bay SOC devices.
>> >> These 2 patches (Commit 16ada730a759) and (Commit 36c6aadaae86)
>> >> are
>> >merged at around the same time.
>> >> We catch the issue later when trying to boot into v5.10-rc1 with
>> >> Keem Bay
>> >EVM.
>> >> That is why I created this patch to handle the clk_ops for Keem Bay
>devices.
>> >
>> >Alright, so the previous changes were simply not sufficient to
>> >complete the support.
>> >
>> >>
>> >> >
>> >> >>
>> >> >> Fixes: 36c6aadaae86 ("mmc: sdhci-of-arasan: Add support for
>> >> >> Intel Keem
>> >> >> Bay")
>> >> >
>> >> >Is $subject patch fixing a bug/regression?
>> >>
>> >> This is to fix issue on previous commit. It is a bug fix.
>> >
>> >Has it ever worked?
>>
>> Yes it is working. Tested with Keem Bay EVM.
>> SD/EMMC/SDIO devices registered successfully with this fix.
>
>I am not asking if $subject patch makes it work, I understand that it does.
>
>>
>> >
>> >Did the commit you point to with the fixes tag, break some other
>> >existing functionality?
>>
>> It should not break other existing functionality.
>> This is specific for Keem Bay SOC only.
>
>So, you are saying that it has never worked for Keem Bay? But $subject patch
>makes it work?

It is working for Keem Bay before until the Commit 16ada730a759 ("mmc: sdhci-of-arasan: Modify clock operations handling")
came into the picture. Both Commit 16ada730a759 ("mmc: sdhci-of-arasan: Modify clock operations handling") and
Commit 36c6aadaae86 ("mmc: sdhci-of-arasan: Add support for Intel Keem") are merged about the same time.
We did not have "Modify clock operations handling" patch when rebasing and testing during upstreaming process.

I noticed of this issue when using latest mainline v5.10-rcx recently.

>
>Can you please re-spin and update the commit message to better reflect what
>goes on, then I can apply.

Noted. I will update the commit message and re-send again.
Thanks

>
>Kind regards
>Uffe