linux-kernel - Re: [PATCH 2/2] venus: pm_helpers: Use dev_pm_genpd_set

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Message-ID: <2299ec8f-4b80-48ea-96ed-d1eb40998e55@linaro.org>
Date: Fri, 22 Nov 2024 12:50:56 +0000
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Renjiang Han <quic_renjiang@...cinc.com>,
 Bjorn Andersson <andersson@...nel.org>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd
 <sboyd@...nel.org>, Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
 Vikash Garodia <quic_vgarodia@...cinc.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Subject: Re: [PATCH 2/2] venus: pm_helpers: Use dev_pm_genpd_set_hwmode to
 switch GDSC mode on V4

On 22/11/2024 10:31, Renjiang Han wrote:
> -	if (IS_V6(core))
> +	if (IS_V6(core) || IS_V4(core))

sdm845 IS_V4()

The GDSCs for the clock OTOH are


static struct gdsc vcodec0_gdsc = {
         .gdscr = 0x874,
         .pd = {
                 .name = "vcodec0_gdsc",
         },
         .cxcs = (unsigned int []){ 0x890, 0x930 },
         .cxc_count = 2,
         .flags = HW_CTRL | POLL_CFG_GDSCR,
         .pwrsts = PWRSTS_OFF_ON,
};

static struct gdsc vcodec1_gdsc = {
         .gdscr = 0x8b4,
         .pd = {
                 .name = "vcodec1_gdsc",
         },
         .cxcs = (unsigned int []){ 0x8d0, 0x950 },
         .cxc_count = 2,
         .flags = HW_CTRL | POLL_CFG_GDSCR,
         .pwrsts = PWRSTS_OFF_ON,
};

I can't see how this series will work on 845.

---
bod