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* [PATCH] phy: mediatek: hdmi: mt8195: fix prediv bad upper limit test
@ 2023-05-30  8:43 Guillaume Ranquet
  2023-05-30  9:24 ` AngeloGioacchino Del Regno
  2023-07-11  7:36 ` Vinod Koul
  0 siblings, 2 replies; 3+ messages in thread
From: Guillaume Ranquet @ 2023-05-30  8:43 UTC (permalink / raw)
  To: Chun-Kuang Hu, Philipp Zabel, Chunfeng Yun, Vinod Koul,
	Kishon Vijay Abraham I, Matthias Brugger,
	AngeloGioacchino Del Regno
  Cc: dri-devel, linux-mediatek, linux-arm-kernel, linux-phy,
	linux-kernel, Guillaume Ranquet

The pll prediv calculus searchs for the smallest prediv that gets
the ns_hdmipll_ck in the range of 5 GHz to 12 GHz.

A typo in the upper bound test was testing for 5Ghz to 1Ghz

Fixes: 45810d486bb44 ("phy: mediatek: add support for phy-mtk-hdmi-mt8195")
Signed-off-by: Guillaume Ranquet <granquet@baylibre.com>
---
 drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
index 8aa7251de4a9..bbfe11d6a69d 100644
--- a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
+++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c
@@ -253,7 +253,7 @@ static int mtk_hdmi_pll_calc(struct mtk_hdmi_phy *hdmi_phy, struct clk_hw *hw,
 	for (i = 0; i < ARRAY_SIZE(txpredivs); i++) {
 		ns_hdmipll_ck = 5 * tmds_clk * txposdiv * txpredivs[i];
 		if (ns_hdmipll_ck >= 5 * GIGA &&
-		    ns_hdmipll_ck <= 1 * GIGA)
+		    ns_hdmipll_ck <= 12 * GIGA)
 			break;
 	}
 	if (i == (ARRAY_SIZE(txpredivs) - 1) &&

---
base-commit: 9f925874281f7e8855855d6210d6e29d844e4307
change-id: 20230529-hdmi_phy_fix-9dab6eb42ef7

Best regards,
-- 
Guillaume Ranquet <granquet@baylibre.com>


^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2023-07-11  7:37 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2023-05-30  8:43 [PATCH] phy: mediatek: hdmi: mt8195: fix prediv bad upper limit test Guillaume Ranquet
2023-05-30  9:24 ` AngeloGioacchino Del Regno
2023-07-11  7:36 ` Vinod Koul

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