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Message-ID: <20180619170307.33232.70445@harbor.lan>
Date: Tue, 19 Jun 2018 10:03:07 -0700
From: Michael Turquette <mturquette@...libre.com>
To: Jerome Brunet <jbrunet@...libre.com>,
Stephen Boyd <sboyd@...nel.org>
Cc: Jerome Brunet <jbrunet@...libre.com>, linux-clk@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-soc@...r.kernel.org,
David Brown <david.brown@...aro.org>,
Andy Gross <andy.gross@...aro.org>,
Linus Walleij <linus.walleij@...aro.org>,
Quentin Schulz <quentin.schulz@...e-electrons.com>,
Maxime Ripard <maxime.ripard@...e-electrons.com>
Subject: Re: [PATCH 1/2] clk: qcom: drop CLK_SET_RATE_GATE from sdc clocks
Quoting Jerome Brunet (2018-06-19 06:40:50)
> the mmci driver (drivers/mmc/host/mmci.c) does the following sequence:
> * clk_prepare_enable()
> * clk_set_rate()
>
> on SDCx_clk which is a children of SDCx_src. SDCx_src has
> CLK_SET_RATE_GATE so this sequence should not be allowed but this was not
> enforced. IOW, the flag is ignored. Dropping the flag won't change
> anything to the current behaviour of the platform.
>
> CLK_SET_RATE_GATE is being fixed and enforced now. If the flag was kept,
> the mmci driver would receive -EBUSY when calling clk_set_rate()
>
> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
Applied to clk-qcom-set-rate-gate.
Thanks,
Mike
> ---
> drivers/clk/qcom/gcc-ipq806x.c | 3 ---
> drivers/clk/qcom/gcc-mdm9615.c | 2 --
> drivers/clk/qcom/gcc-msm8660.c | 5 -----
> drivers/clk/qcom/gcc-msm8960.c | 5 -----
> 4 files changed, 15 deletions(-)
>
> diff --git a/drivers/clk/qcom/gcc-ipq806x.c b/drivers/clk/qcom/gcc-ipq806x.c
> index 28eb200d0f1e..5f61225657ab 100644
> --- a/drivers/clk/qcom/gcc-ipq806x.c
> +++ b/drivers/clk/qcom/gcc-ipq806x.c
> @@ -1220,7 +1220,6 @@ static struct clk_rcg sdc1_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> @@ -1269,7 +1268,6 @@ static struct clk_rcg sdc3_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> @@ -1353,7 +1351,6 @@ static struct clk_rcg tsif_ref_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> diff --git a/drivers/clk/qcom/gcc-mdm9615.c b/drivers/clk/qcom/gcc-mdm9615.c
> index b99dd406e907..849046fbed6d 100644
> --- a/drivers/clk/qcom/gcc-mdm9615.c
> +++ b/drivers/clk/qcom/gcc-mdm9615.c
> @@ -947,7 +947,6 @@ static struct clk_rcg sdc1_src = {
> .parent_names = gcc_cxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> @@ -996,7 +995,6 @@ static struct clk_rcg sdc2_src = {
> .parent_names = gcc_cxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> diff --git a/drivers/clk/qcom/gcc-msm8660.c b/drivers/clk/qcom/gcc-msm8660.c
> index c347a0d44bc8..7e930e25c79f 100644
> --- a/drivers/clk/qcom/gcc-msm8660.c
> +++ b/drivers/clk/qcom/gcc-msm8660.c
> @@ -1558,7 +1558,6 @@ static struct clk_rcg sdc1_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> @@ -1607,7 +1606,6 @@ static struct clk_rcg sdc2_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> @@ -1656,7 +1654,6 @@ static struct clk_rcg sdc3_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> @@ -1705,7 +1702,6 @@ static struct clk_rcg sdc4_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> @@ -1754,7 +1750,6 @@ static struct clk_rcg sdc5_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> diff --git a/drivers/clk/qcom/gcc-msm8960.c b/drivers/clk/qcom/gcc-msm8960.c
> index eb551c75fba6..fd495e0471bb 100644
> --- a/drivers/clk/qcom/gcc-msm8960.c
> +++ b/drivers/clk/qcom/gcc-msm8960.c
> @@ -1628,7 +1628,6 @@ static struct clk_rcg sdc1_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> @@ -1677,7 +1676,6 @@ static struct clk_rcg sdc2_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> @@ -1726,7 +1724,6 @@ static struct clk_rcg sdc3_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> @@ -1775,7 +1772,6 @@ static struct clk_rcg sdc4_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> @@ -1824,7 +1820,6 @@ static struct clk_rcg sdc5_src = {
> .parent_names = gcc_pxo_pll8,
> .num_parents = 2,
> .ops = &clk_rcg_ops,
> - .flags = CLK_SET_RATE_GATE,
> },
> }
> };
> --
> 2.14.3
>
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