linux-kernel - Re: [PATCH 1/2] clk: qcom: gcc: Add GPU and NPU clocks for SM8150

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Date:   Mon, 27 Apr 2020 10:11:26 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     Michael Turquette <mturquette@...libre.com>,
        linux-arm-msm@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Jonathan Marek <jonathan@...ek.ca>, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] clk: qcom: gcc: Add GPU and NPU clocks for SM8150

On 25-04-20, 12:10, Stephen Boyd wrote:
> Quoting Vinod Koul (2020-04-23 21:43:10)
> > Add the GPU and NPU clocks for SM8150. They were missed in earlier
> > addition of clock driver.
> > 
> > Signed-off-by: Vinod Koul <vkoul@...nel.org>
> 
> Fixes tag? That way backporters know they're missing this.

Yes it makes sense to add here, will add.

> > +/* external clocks so add BRANCH_HALT_SKIP */
> > +static struct clk_branch gcc_npu_gpll0_clk_src = {
> > +       .halt_check = BRANCH_HALT_SKIP,
> > +       .clkr = {
> > +               .enable_reg = 0x52004,
> > +               .enable_mask = BIT(18),
> > +               .hw.init = &(struct clk_init_data){
> > +                       .name = "gcc_npu_gpll0_clk_src",
> > +                       .parent_hws = (const struct clk_hw *[]){
> > +                               &gpll0.clkr.hw },
> > +                       .num_parents = 1,
> > +                       .flags = CLK_SET_RATE_PARENT,
> > +                       .ops = &clk_branch2_ops,
> > +               },
> > +       },
> > +};
> > +
> > +/* external clocks so add BRANCH_HALT_SKIP */
> 
> None of these look external. The parents are all inside this driver. Why
> are we skipping the halt check?

yeah not sure why this got added here, tested and these look fine. I
will update these and send update.

Thanks for the review

-- 
~Vinod