linux-kernel - Re: [PATCH v3 2/2] soc: mediatek: svs: add support for mt8188

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Message-ID: <0009f224-aac4-6681-fde5-cf1ead94c604@collabora.com>
Date:   Tue, 19 Sep 2023 12:52:40 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Mark Tseng <chun-jen.tseng@...iatek.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Roger Lu <roger.lu@...iatek.com>,
        Kevin Hilman <khilman@...nel.org>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v3 2/2] soc: mediatek: svs: add support for mt8188

Il 19/09/23 03:44, Mark Tseng ha scritto:
> MT8188 svs gpu uses 2-line high bank and low bank to optimize the
> voltage of opp table for higher and lower frequency respectively.
> 
> Signed-off-by: Mark Tseng <chun-jen.tseng@...iatek.com>
> ---
>   drivers/soc/mediatek/mtk-svs.c | 184 ++++++++++++++++++++++++++++++++-
>   1 file changed, 180 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c
> index 3a2f97cd5272..f31e3bedff50 100644
> --- a/drivers/soc/mediatek/mtk-svs.c
> +++ b/drivers/soc/mediatek/mtk-svs.c
> @@ -407,6 +407,7 @@ struct svs_platform_data {
>    * @dcbdet: svs efuse data
>    * @dcmdet: svs efuse data
>    * @turn_pt: 2-line turn point tells which opp_volt calculated by high/low bank
> + * @vbin_turn_pt: voltage bin turn point helps know which svsb_volt should be overridden
>    * @type: bank type to represent it is 2-line (high/low) bank or 1-line bank
>    *
>    * Svs bank will generate suitalbe voltages by below general math equation
> @@ -469,6 +470,7 @@ struct svs_bank {
>   	u32 dcbdet;
>   	u32 dcmdet;
>   	u32 turn_pt;
> +	u32 vbin_turn_pt;
>   	u32 type;
>   };
>   
> @@ -751,11 +753,12 @@ static int svs_status_debug_show(struct seq_file *m, void *v)
>   
>   	ret = thermal_zone_get_temp(svsb->tzd, &tzone_temp);
>   	if (ret)
> -		seq_printf(m, "%s: temperature ignore, turn_pt = %u\n",
> -			   svsb->name, svsb->turn_pt);
> +		seq_printf(m, "%s: temperature ignore, vbin_turn_pt = %u, turn_pt = %u\n",
> +			   svsb->name, svsb->vbin_turn_pt, svsb->turn_pt);
>   	else
> -		seq_printf(m, "%s: temperature = %d, turn_pt = %u\n",
> -			   svsb->name, tzone_temp, svsb->turn_pt);
> +		seq_printf(m, "%s: temperature = %d, vbin_turn_pt = %u, turn_pt = %u\n",
> +			   svsb->name, tzone_temp, svsb->vbin_turn_pt,
> +			   svsb->turn_pt);
>   
>   	for (i = 0; i < svsb->opp_count; i++) {
>   		opp = dev_pm_opp_find_freq_exact(svsb->opp_dev,
> @@ -952,6 +955,29 @@ static void svs_get_bank_volts_v3(struct svs_platform *svsp)
>   	for (i = opp_start; i < opp_stop; i++)
>   		if (svsb->volt_flags & SVSB_REMOVE_DVTFIXED_VOLT)
>   			svsb->volt[i] -= svsb->dvt_fixed;
> +
> +	/* For voltage bin support */

I already asked you to please send the voltage bin support as a separated commit
because this is for *all SoCs* and not only for 8188.

Again, please separate the voltage bin support from the MT8188 support.

soc: mediatek: svs: Add support for voltage bins
soc: mediatek: svs: Add support for MT8188 SoC

Regards,
Angelo