linux-kernel - Re: [PATCH 11/12] soc: mediatek: pm-domains: Add support for mt8183

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Date:   Fri, 25 Sep 2020 10:21:23 +0200
From:   Enric Balletbo i Serra <enric.balletbo@...labora.com>
To:     Hsin-Yi Wang <hsinyi@...omium.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Collabora Kernel ML <kernel@...labora.com>,
        Fabien Parent <fparent@...libre.com>,
        Nicolas Boichat <drinkcat@...omium.org>, weiyi.lu@...iatek.com,
        Matthias Brugger <mbrugger@...e.com>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH 11/12] soc: mediatek: pm-domains: Add support for mt8183

Hi Hsin-Yi and Matthias,

Hsin-Yi, many thanks to provide the register names.

On 25/9/20 9:37, Hsin-Yi Wang wrote:
> On Wed, Sep 16, 2020 at 8:19 PM Matthias Brugger <matthias.bgg@...il.com> wrote:
>>
>>
>>
>> On 16/09/2020 11:46, Matthias Brugger wrote:
>>>
>>>
>>> On 10/09/2020 19:28, Enric Balletbo i Serra wrote:
>>>> From: Matthias Brugger <mbrugger@...e.com>
>>>>
>>>> Add the needed board data to support mt8183 SoC.
>>>>
>>>> Signed-off-by: Matthias Brugger <mbrugger@...e.com>
>>>> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
>>>> ---
>>>>
>>>>   drivers/soc/mediatek/mtk-pm-domains.c | 162 ++++++++++++++++++++++++++
>>>>   include/linux/soc/mediatek/infracfg.h |  28 +++++
>>>>   2 files changed, 190 insertions(+)
>>>>
>>>> diff --git a/drivers/soc/mediatek/mtk-pm-domains.c
>>>> b/drivers/soc/mediatek/mtk-pm-domains.c
>>>> index 29e88adc8ea6..aa434f616fee 100644
>>>> --- a/drivers/soc/mediatek/mtk-pm-domains.c
>>>> +++ b/drivers/soc/mediatek/mtk-pm-domains.c
>>> [...]
>>>> +/*
>>>> + * MT8183 power domain support
>>>> + */
>>>> +static const struct scpsys_domain_data scpsys_domain_data_mt8183[] = {
>>>> +    [MT8183_POWER_DOMAIN_AUDIO] = {
>>>> +        .sta_mask = PWR_STATUS_AUDIO,
>>>> +        .ctl_offs = 0x0314,
>>>> +        .sram_pdn_bits = GENMASK(11, 8),
>>>> +        .sram_pdn_ack_bits = GENMASK(15, 12),
>>>> +    },
>>>> +    [MT8183_POWER_DOMAIN_CONN] = {
>>>> +        .sta_mask = PWR_STATUS_CONN,
>>>> +        .ctl_offs = 0x032c,
>>>> +        .sram_pdn_bits = 0,
>>>> +        .sram_pdn_ack_bits = 0,
>>>> +        .bp_infracfg = {
>>>> +            BUS_PROT_WR(MT8183_TOP_AXI_PROT_EN_CONN, 0x2a0, 0x2a4, 0x228),
>>>
>>> We have repeating values triplets for set, clear and status register in infracfg
>>> and SMI.
>>>
>>> Weiyi can you help to get names to this registers? I wasn't able to find
>>> anything in the datasheet.
>>
>> I think for the infracfg part I figured it out:
>>
>> #define INFRA_TOPAXI_PROTECTEN_SET      0x2a0
>> #define INFRA_TOPAXI_PROTECTEN_CLR      0x2a4
>> #define INFRA_TOPAXI_PROTECTEN_STA1     0x228
>>
>> #define INFRA_TOPAXI_PROTECTEN_1_SET    0x2a8
>> #define INFRA_TOPAXI_PROTECTEN_1_CLR    0x2ac
>> #define INFRA_TOPAXI_PROTECTEN_STA1_1   0x258
>>
>> #define INFRA_TOPAXI_PROTECTEN_MCU_SET  0x2d4
>> #define INFRA_TOPAXI_PROTECTEN_MCU_CLR  0x2d8
>> #define INFRA_TOPAXI_PROTECTEN_MM_STA1  0x2ec
>>

I think this is SoC specific, right? So, I should add the MT8183_ prefix.

>> Weiyi, can you still provide the register names for the SMI?
>>
>> Thanks in advance!
>> Matthias
>>
> Hi Matthias,
> 
> SMI names are
> #define SMI_COMMON_CLAMP_EN 0x3c0
> #define SMI_COMMON_CLAMP_EN_SET 0x3c4
> #define SMI_COMMON_CLAMP_EN_CLR 0x3c8
> 

The same here, this is specific for MT8183, right?

Thanks,
  Enric

> Thanks
>