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From: Kuogee Hsieh <quic_khsieh@quicinc.com>
To: <robdclark@gmail.com>, <sean@poorly.run>, <swboyd@chromium.org>,
	<dianders@chromium.org>, <vkoul@kernel.org>, <daniel@ffwll.ch>,
	<airlied@linux.ie>, <agross@kernel.org>,
	<dmitry.baryshkov@linaro.org>, <bjorn.andersson@linaro.org>
Cc: <quic_abhinavk@quicinc.com>, <quic_khsieh@quicinc.com>,
	<quic_sbillaka@quicinc.com>, <freedreno@lists.freedesktop.org>,
	<dri-devel@lists.freedesktop.org>,
	<linux-arm-msm@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH v3] drm/msm/dp: correct 1.62G link rate at dp_catalog_ctrl_config_msa()
Date: Wed, 24 Aug 2022 13:15:50 -0700	[thread overview]
Message-ID: <1661372150-3764-1-git-send-email-quic_khsieh@quicinc.com> (raw)

At current implementation there is an extra 0 at 1.62G link rate which cause
no correct pixel_div selected for 1.62G link rate to calculate mvid and nvid.
This patch delete the extra 0 to have mvid and nvid be calculated correctly.

Changes in v2:
-- fix Fixes tag's text

Changes in v3:
-- fix misspelling of "Reviewed-by"

Fixes: 937f941ca06f  ("drm/msm/dp: Use qmp phy for DP PLL and PHY")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
---
 drivers/gpu/drm/msm/dp/dp_catalog.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c
index 7257515..676279d 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.c
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.c
@@ -431,7 +431,7 @@ void dp_catalog_ctrl_config_msa(struct dp_catalog *dp_catalog,
 
 	if (rate == link_rate_hbr3)
 		pixel_div = 6;
-	else if (rate == 1620000 || rate == 270000)
+	else if (rate == 162000 || rate == 270000)
 		pixel_div = 2;
 	else if (rate == link_rate_hbr2)
 		pixel_div = 4;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


WARNING: multiple messages have this Message-ID (diff)
From: Kuogee Hsieh <quic_khsieh@quicinc.com>
To: <robdclark@gmail.com>, <sean@poorly.run>, <swboyd@chromium.org>,
	<dianders@chromium.org>, <vkoul@kernel.org>, <daniel@ffwll.ch>,
	<airlied@linux.ie>, <agross@kernel.org>,
	<dmitry.baryshkov@linaro.org>, <bjorn.andersson@linaro.org>
Cc: quic_sbillaka@quicinc.com, linux-arm-msm@vger.kernel.org,
	quic_abhinavk@quicinc.com, dri-devel@lists.freedesktop.org,
	quic_khsieh@quicinc.com, freedreno@lists.freedesktop.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v3] drm/msm/dp: correct 1.62G link rate at dp_catalog_ctrl_config_msa()
Date: Wed, 24 Aug 2022 13:15:50 -0700	[thread overview]
Message-ID: <1661372150-3764-1-git-send-email-quic_khsieh@quicinc.com> (raw)

At current implementation there is an extra 0 at 1.62G link rate which cause
no correct pixel_div selected for 1.62G link rate to calculate mvid and nvid.
This patch delete the extra 0 to have mvid and nvid be calculated correctly.

Changes in v2:
-- fix Fixes tag's text

Changes in v3:
-- fix misspelling of "Reviewed-by"

Fixes: 937f941ca06f  ("drm/msm/dp: Use qmp phy for DP PLL and PHY")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
---
 drivers/gpu/drm/msm/dp/dp_catalog.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c
index 7257515..676279d 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.c
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.c
@@ -431,7 +431,7 @@ void dp_catalog_ctrl_config_msa(struct dp_catalog *dp_catalog,
 
 	if (rate == link_rate_hbr3)
 		pixel_div = 6;
-	else if (rate == 1620000 || rate == 270000)
+	else if (rate == 162000 || rate == 270000)
 		pixel_div = 2;
 	else if (rate == link_rate_hbr2)
 		pixel_div = 4;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


             reply	other threads:[~2022-08-24 20:16 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-24 20:15 Kuogee Hsieh [this message]
2022-08-24 20:15 ` [PATCH v3] drm/msm/dp: correct 1.62G link rate at dp_catalog_ctrl_config_msa() Kuogee Hsieh
2022-08-24 21:53 ` Doug Anderson
2022-08-24 21:53   ` Doug Anderson
2022-08-26 10:14 ` Dmitry Baryshkov
2022-08-26 10:14   ` Dmitry Baryshkov

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