From: Neil Armstrong <narmstrong@baylibre•com>
To: dri-devel@lists•freedesktop.org
Cc: linux-amlogic@lists•infradead.org, linux-kernel@vger•kernel.org,
linux-arm-kernel@lists•infradead.org,
Neil Armstrong <narmstrong@baylibre•com>
Subject: [PATCH] drm/meson: vclk: use the correct G12A frac max value
Date: Mon, 26 Aug 2019 16:46:47 +0200 [thread overview]
Message-ID: <20190826144647.17302-1-narmstrong@baylibre.com> (raw)
When calculating the HDMI PLL settings for a DMT mode PHY frequency,
use the correct max fractional PLL value for G12A VPU.
With this fix, we can finally setup the 1024x76-60 mode.
Fixes: 202b9808f8ed ("drm/meson: Add G12A Video Clock setup")
Signed-off-by: Neil Armstrong <narmstrong@baylibre•com>
---
drivers/gpu/drm/meson/meson_vclk.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/meson/meson_vclk.c b/drivers/gpu/drm/meson/meson_vclk.c
index ac491a781952..f690793ae2d5 100644
--- a/drivers/gpu/drm/meson/meson_vclk.c
+++ b/drivers/gpu/drm/meson/meson_vclk.c
@@ -638,13 +638,18 @@ static bool meson_hdmi_pll_validate_params(struct meson_drm *priv,
if (frac >= HDMI_FRAC_MAX_GXBB)
return false;
} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
- meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL) ||
- meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
+ meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL)) {
/* Empiric supported min/max dividers */
if (m < 106 || m > 247)
return false;
if (frac >= HDMI_FRAC_MAX_GXL)
return false;
+ } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
+ /* Empiric supported min/max dividers */
+ if (m < 106 || m > 247)
+ return false;
+ if (frac >= HDMI_FRAC_MAX_G12A)
+ return false;
}
return true;
--
2.22.0
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next reply other threads:[~2019-08-26 14:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-26 14:46 Neil Armstrong [this message]
2019-08-27 5:40 ` [PATCH] drm/meson: vclk: use the correct G12A frac max value Martin Blumenstingl
2019-08-27 7:11 ` Neil Armstrong
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