Re: [PATCH v0 01/10] drm/bridge: dw-hdmi: add low-active PHY reset

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Lucas,

On 06/04/2022 18:01, Lucas Stach wrote:
Allow vendor PHY implementations to reset PHYs with different polarity
than the current Gen2 reset.

Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
---
  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 7 +++++++
  include/drm/bridge/dw_hdmi.h              | 1 +
  2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 4befc104d220..7600f26aab27 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1365,6 +1365,13 @@ void dw_hdmi_phy_reset(struct dw_hdmi *hdmi)
  }
  EXPORT_SYMBOL_GPL(dw_hdmi_phy_reset);
+void dw_hdmi_phy_reset_active_low(struct dw_hdmi *hdmi)
+{
+	hdmi_writeb(hdmi, 0, HDMI_MC_PHYRSTZ);
+	hdmi_writeb(hdmi, HDMI_MC_PHYRSTZ_PHYRSTZ, HDMI_MC_PHYRSTZ);
+}
+EXPORT_SYMBOL_GPL(dw_hdmi_phy_reset_active_low);
+
  void dw_hdmi_phy_i2c_set_addr(struct dw_hdmi *hdmi, u8 address)
  {
  	hdmi_phy_test_clear(hdmi, 1);
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index 2a1f85f9a8a3..9b3d52a1e62a 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -190,6 +190,7 @@ void dw_hdmi_phy_i2c_write(struct dw_hdmi *hdmi, unsigned short data,
  void dw_hdmi_phy_gen2_pddq(struct dw_hdmi *hdmi, u8 enable);
  void dw_hdmi_phy_gen2_txpwron(struct dw_hdmi *hdmi, u8 enable);
  void dw_hdmi_phy_reset(struct dw_hdmi *hdmi);
+void dw_hdmi_phy_reset_active_low(struct dw_hdmi *hdmi);
enum drm_connector_status dw_hdmi_phy_read_hpd(struct dw_hdmi *hdmi,
  					       void *data);

This has already been submitted at https://lore.kernel.org/r/800262112191a720639ba321be18f0926d4e1d2a.1649230434.git.Sandor.yu@xxxxxxx



[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux