linux-kernel - Re: [PATCH V4 7/8] soc: mediatek: pwrap: add mt6351 for mt6797 SoCs

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Date:   Thu, 3 May 2018 11:53:50 +0800
From:   Sean Wang <sean.wang@...iatek.com>
To:     <argus.lin@...iatek.com>
CC:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Chenglin Xu <chenglin.xu@...iatek.com>,
        <wsd_upstream@...iatek.com>, <henryc.chen@...iatek.com>,
        <flora.fu@...iatek.com>, Chen Zhong <chen.zhong@...iatek.com>,
        Christophe Jaillet <christophe.jaillet@...adoo.fr>,
        "shailendra . v" <shailendra.v@...sung.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH V4 7/8] soc: mediatek: pwrap: add mt6351 for mt6797 SoCs

Hi, Argus

On Wed, 2018-05-02 at 17:21 +0800, argus.lin@...iatek.com wrote:
> From: Argus Lin <argus.lin@...iatek.com>
> 
> mt6351 is a new power management IC and it is
> used for mt6797 SoCs. We need to add mt6351_regs for
> pmic register mapping and pmic_mt6351 for
> register accessing by regmap.
> 

suggest line wrapping closely at 75 columns

> Signed-off-by: Argus Lin <argus.lin@...iatek.com>
> ---
>  drivers/soc/mediatek/mtk-pmic-wrap.c | 29 +++++++++++++++++++++++++++++
>  1 file changed, 29 insertions(+)
> 
> diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
> index 285bfa76249f..26076900eee0 100644
> --- a/drivers/soc/mediatek/mtk-pmic-wrap.c
> +++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
> @@ -152,6 +152,21 @@ static const u32 mt6397_regs[] = {
>  	[PWRAP_DEW_CIPHER_SWRST] =	0xbc24,
>  };
>  
> +static const u32 mt6351_regs[] = {
> +	[PWRAP_DEW_DIO_EN] =		0x02F2,
> +	[PWRAP_DEW_READ_TEST] =		0x02F4,
> +	[PWRAP_DEW_WRITE_TEST] =	0x02F6,
> +	[PWRAP_DEW_CRC_EN] =		0x02FA,
> +	[PWRAP_DEW_CRC_VAL] =		0x02FC,
> +	[PWRAP_DEW_CIPHER_KEY_SEL] =	0x0300,
> +	[PWRAP_DEW_CIPHER_IV_SEL] =	0x0302,
> +	[PWRAP_DEW_CIPHER_EN] =		0x0304,
> +	[PWRAP_DEW_CIPHER_RDY] =	0x0306,
> +	[PWRAP_DEW_CIPHER_MODE] =	0x0308,
> +	[PWRAP_DEW_CIPHER_SWRST] =	0x030A,
> +	[PWRAP_DEW_RDDMY_NO] =		0x030C,
> +};
> +

trim the unused registers if any

>  enum pwrap_regs {
>  	PWRAP_MUX_SEL,
>  	PWRAP_WRAP_EN,
> @@ -684,6 +699,7 @@ static int mt8135_regs[] = {
>  
>  enum pmic_type {
>  	PMIC_MT6323,
> +	PMIC_MT6351,
>  	PMIC_MT6380,
>  	PMIC_MT6397,
>  };
> @@ -1150,6 +1166,7 @@ static int pwrap_init_cipher(struct pmic_wrapper *wrp)
>  			    0x1);
>  		break;
>  	case PMIC_MT6323:
> +	case PMIC_MT6351:
>  		pwrap_write(wrp, wrp->slave->dew_regs[PWRAP_DEW_CIPHER_EN],
>  			    0x1);
>  		break;
> @@ -1435,6 +1452,15 @@ static const struct pwrap_slv_type pmic_mt6397 = {
>  	.pwrap_write = pwrap_write16,
>  };
>  
> +static const struct pwrap_slv_type pmic_mt6351 = {
> +	.dew_regs = mt6351_regs,
> +	.type = PMIC_MT6351,
> +	.regmap = &pwrap_regmap_config16,
> +	.caps = 0,

the caps should be

PWRAP_SLV_CAP_SPI | PWRAP_SLV_CAP_DUALIO |
                 PWRAP_SLV_CAP_SECURITY,
 
otherwise, the registers you defined here cannot be accessed by its
function.


> +	.pwrap_read = pwrap_read16,
> +	.pwrap_write = pwrap_write16,
> +};
> +
>  static const struct of_device_id of_slave_match_tbl[] = {
>  	{
>  		.compatible = "mediatek,mt6323",
> @@ -1449,6 +1475,9 @@ static const struct of_device_id of_slave_match_tbl[] = {
>  		.compatible = "mediatek,mt6397",
>  		.data = &pmic_mt6397,
>  	}, {
> +		.compatible = "mediatek,mt6351",
> +		.data = &pmic_mt6351,
> +	}, {

need to be sorted din alphabetical order

>  		/* sentinel */
>  	}
>  };