linux-kernel - Re: [PATCH] clk: qcom: gcc-x1e80100: Set parent rate for USB3 sec and tert PHY pipe clks

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Date: Fri, 28 Jun 2024 11:14:47 +0300
From: Abel Vesa <abel.vesa@...aro.org>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: Bjorn Andersson <andersson@...nel.org>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>, linux-arm-msm@...r.kernel.org,
	linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] clk: qcom: gcc-x1e80100: Set parent rate for USB3 sec
 and tert PHY pipe clks

On 24-05-31 02:56:12, Dmitry Baryshkov wrote:
> On Thu, May 30, 2024 at 05:05:24PM +0300, Abel Vesa wrote:
> > Allow the USB3 second and third GCC PHY pipe clocks to propagate the
> > rate to the pipe clocks provided by the QMP combo PHYs. The first
> > instance is already doing that.
> 
> Which driver changes the rate of those clocks?

Sorry for the late reply.

These clocks are consumed by the combo PHYs, so driver is
phy-qcom-qmp-combo. This driver doesn't change the rates of the pipe
clocks as of yet.

The fix is still good, even if it's just to align all three clocks.

> 
> > 
> > Fixes: ("161b7c401f4b clk: qcom: Add Global Clock controller (GCC) driver for X1E80100")
> > Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> > ---
> >  drivers/clk/qcom/gcc-x1e80100.c | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/drivers/clk/qcom/gcc-x1e80100.c b/drivers/clk/qcom/gcc-x1e80100.c
> > index 1404017be918..8c72fdc99fd9 100644
> > --- a/drivers/clk/qcom/gcc-x1e80100.c
> > +++ b/drivers/clk/qcom/gcc-x1e80100.c
> > @@ -5269,6 +5269,7 @@ static struct clk_branch gcc_usb3_sec_phy_pipe_clk = {
> >  				&gcc_usb3_sec_phy_pipe_clk_src.clkr.hw,
> >  			},
> >  			.num_parents = 1,
> > +			.flags = CLK_SET_RATE_PARENT,
> >  			.ops = &clk_branch2_ops,
> >  		},
> >  	},
> > @@ -5339,6 +5340,7 @@ static struct clk_branch gcc_usb3_tert_phy_pipe_clk = {
> >  				&gcc_usb3_tert_phy_pipe_clk_src.clkr.hw,
> >  			},
> >  			.num_parents = 1,
> > +			.flags = CLK_SET_RATE_PARENT,
> >  			.ops = &clk_branch2_ops,
> >  		},
> >  	},
> > 
> > ---
> > base-commit: 9d99040b1bc8dbf385a8aa535e9efcdf94466e19
> > change-id: 20240530-x1e80100-clk-gcc-usb3-sec-tert-set-parent-rate-420a9e2113d1
> > 
> > Best regards,
> > -- 
> > Abel Vesa <abel.vesa@...aro.org>
> > 
> 
> -- 
> With best wishes
> Dmitry