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Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0606-drm-vc4-Alter-the-HDMI-state-machine-clock-calc-to-a.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.4/950-0606-drm-vc4-Alter-the-HDMI-state-machine-clock-calc-to-a.patch46
1 files changed, 0 insertions, 46 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0606-drm-vc4-Alter-the-HDMI-state-machine-clock-calc-to-a.patch b/target/linux/bcm27xx/patches-5.4/950-0606-drm-vc4-Alter-the-HDMI-state-machine-clock-calc-to-a.patch
deleted file mode 100644
index dc2d1a2a04..0000000000
--- a/target/linux/bcm27xx/patches-5.4/950-0606-drm-vc4-Alter-the-HDMI-state-machine-clock-calc-to-a.patch
+++ /dev/null
@@ -1,46 +0,0 @@
-From 37b204f22778f51cad7bdf678d7574ff6d7508a6 Mon Sep 17 00:00:00 2001
-From: Dave Stevenson <dave.stevenson@raspberrypi.com>
-Date: Wed, 25 Mar 2020 18:22:40 +0000
-Subject: [PATCH] drm/vc4: Alter the HDMI state machine clock calc to
- allow for 1920x1200
-
-Whilst the documentation for BCM2835 states that the HDMI state machine
-clock needs to be 108% of the pixel clock, other documentation says
-that it only has to be greater than the pixel clock. The firmware
-uses 101%, and that allows 1920x1200@60Hz to work within the
-constraint of the HSM clock being < 163.68MHz.
-
-Adopt 101%, and increase the maximum pixel clock for vc4 to 162MHz
-so that it too supports 1920x1200@60.
-
-Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
----
- drivers/gpu/drm/vc4/vc4_hdmi.c | 9 +++++----
- 1 file changed, 5 insertions(+), 4 deletions(-)
-
---- a/drivers/gpu/drm/vc4/vc4_hdmi.c
-+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
-@@ -581,10 +581,11 @@ static void vc4_hdmi_encoder_enable(stru
- }
-
- /*
-- * The HSM rate needs to be at 108% of the pixel clock, with a
-- * minimum of 108MHz.
-+ * The HSM rate needs to be slightly greater than the pixel clock, with
-+ * a minimum of 108MHz.
-+ * Use 101% as this is what the firmware uses.
- */
-- hsm_rate = max_t(unsigned long, 108000000, (pixel_rate / 100) * 108);
-+ hsm_rate = max_t(unsigned long, 108000000, (pixel_rate / 100) * 101);
- ret = clk_set_rate(vc4_hdmi->hsm_clock, hsm_rate);
- if (ret) {
- DRM_ERROR("Failed to set HSM clock rate: %d\n", ret);
-@@ -1731,7 +1732,7 @@ static int vc4_hdmi_dev_remove(struct pl
- }
-
- static const struct vc4_hdmi_variant bcm2835_variant = {
-- .max_pixel_clock = 148500000,
-+ .max_pixel_clock = 162000000,
- .audio_available = true,
- .cec_available = true,
- .registers = vc4_hdmi_fields,