linux-kernel - [PATCH v2 07/11] clk: qcom: mmcc-msm8998: Set CLK_GET_RATE

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Date:   Thu, 14 Jan 2021 23:10:55 +0100
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>
To:     linux-arm-msm@...r.kernel.org
Cc:     konrad.dybcio@...ainline.org, marijn.suijten@...ainline.org,
        martin.botka@...ainline.org, phone-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org, agross@...nel.org,
        bjorn.andersson@...aro.org, mturquette@...libre.com,
        sboyd@...nel.org, robh+dt@...nel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>
Subject: [PATCH v2 07/11] clk: qcom: mmcc-msm8998: Set CLK_GET_RATE_NOCACHE to pixel/byte clks

The pixel and byte clocks rate should not be cached, as a VCO shutdown
may clear the frequency setup and this may not be set again due to the
cached rate being present.
This will also be useful when shadow clocks will be implemented in
the DSI PLL for seamless timing/resolution switch.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...ainline.org>
---
 drivers/clk/qcom/mmcc-msm8998.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/qcom/mmcc-msm8998.c b/drivers/clk/qcom/mmcc-msm8998.c
index dd68983fe22e..475e00a5fdf4 100644
--- a/drivers/clk/qcom/mmcc-msm8998.c
+++ b/drivers/clk/qcom/mmcc-msm8998.c
@@ -520,7 +520,7 @@ static struct clk_rcg2 byte0_clk_src = {
 		.parent_data = mmss_xo_dsibyte,
 		.num_parents = 4,
 		.ops = &clk_byte2_ops,
-		.flags = CLK_SET_RATE_PARENT,
+		.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE,
 	},
 };
 
@@ -533,7 +533,7 @@ static struct clk_rcg2 byte1_clk_src = {
 		.parent_data = mmss_xo_dsibyte,
 		.num_parents = 4,
 		.ops = &clk_byte2_ops,
-		.flags = CLK_SET_RATE_PARENT,
+		.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE,
 	},
 };
 
@@ -1084,7 +1084,7 @@ static struct clk_rcg2 pclk0_clk_src = {
 		.parent_data = mmss_xo_dsi0pll_dsi1pll,
 		.num_parents = 4,
 		.ops = &clk_pixel_ops,
-		.flags = CLK_SET_RATE_PARENT,
+		.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE,
 	},
 };
 
@@ -1098,7 +1098,7 @@ static struct clk_rcg2 pclk1_clk_src = {
 		.parent_data = mmss_xo_dsi0pll_dsi1pll,
 		.num_parents = 4,
 		.ops = &clk_pixel_ops,
-		.flags = CLK_SET_RATE_PARENT,
+		.flags = CLK_SET_RATE_PARENT | CLK_GET_RATE_NOCACHE,
 	},
 };
 
-- 
2.29.2