Dave,

could you please pick this patch up as a fix for 4.3? It fixes a regression introduced in this cycle by the stricter parameter validation in the DW HDMI driver. Philipp is on holiday this week, so I guess he won't be able to pick it up.

Thanks, Lucas

Am Donnerstag, den 15.10.2015, 15:42 +0200 schrieb Lucas Stach:

This worked before the dw-hdmi bridge code was changed to validate the setup data more strictly. Add back support for modes with a pixel clock up to 216MHz. Even higher clocks should work, but we are missing the required setup data for now.

Also change the mode validate callbacks to disallow modes with higher pixelclocks, so we don't end up failing the modeset later on.

Signed-off-by: Lucas Stach l.stach@pengutronix.de

drivers/gpu/drm/imx/dw_hdmi-imx.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c index 4aad6bce6241..13596e822391 100644 --- a/drivers/gpu/drm/imx/dw_hdmi-imx.c +++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c @@ -48,11 +48,17 @@ static const struct dw_hdmi_mpll_config imx_mpll_cfg[] = { { 0x40a2, 0x000a }, }, }, {

• ~0UL, {
  

• 216000000, {
  { 0x00a0, 0x000a },
  { 0x2001, 0x000f },
  { 0x4002, 0x000f },
  

  },
• }, {

• ~0UL, {
  

• 	{ 0x0000, 0x0000 },
  

• 	{ 0x0000, 0x0000 },
  

• 	{ 0x0000, 0x0000 },
  

• },
  

  }

};

@@ -82,7 +88,7 @@ static const struct dw_hdmi_curr_ctrl imx_cur_ctr[] = { */ static const struct dw_hdmi_phy_config imx_phy_config[] = { /*pixelclk symbol term vlev */

• { 148500000, 0x800d, 0x0005, 0x01ad},

• { 216000000, 0x800d, 0x0005, 0x01ad}, { ~0UL, 0x0000, 0x0000, 0x0000}

};

@@ -148,7 +154,8 @@ static enum drm_mode_status imx6q_hdmi_mode_valid(struct drm_connector *con, { if (mode->clock < 13500) return MODE_CLOCK_LOW;

• if (mode->clock > 266000)

• /* FIXME: Hardware is capable of 266MHz, but setup data is missing. */

• if (mode->clock > 216000) return MODE_CLOCK_HIGH;

  return MODE_OK;

@@ -159,7 +166,8 @@ static enum drm_mode_status imx6dl_hdmi_mode_valid(struct drm_connector *con, { if (mode->clock < 13500) return MODE_CLOCK_LOW;

• if (mode->clock > 270000)

• /* FIXME: Hardware is capable of 270MHz, but setup data is missing. */

• if (mode->clock > 216000) return MODE_CLOCK_HIGH;

  return MODE_OK;