From: Lucas Stach <l.stach@pengutronix.de>
To: Philipp Zabel <p.zabel@pengutronix.de>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Shawn Guo <shawnguo@kernel.org>,
NXP Linux Team <linux-imx@nxp.com>
Cc: devicetree@vger.kernel.org,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Neil Armstrong <narmstrong@baylibre.com>,
Robert Foss <robert.foss@linaro.org>,
Kishon Vijay Abraham I <kishon@ti.com>,
Vinod Koul <vkoul@kernel.org>,
dri-devel@lists.freedesktop.org,
Andrzej Hajda <andrzej.hajda@intel.com>,
linux-phy@lists.infradead.org, patchwork-lst@pengutronix.de,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v0 01/10] drm/bridge: dw-hdmi: add low-active PHY reset
Date: Wed, 6 Apr 2022 18:01:14 +0200 [thread overview]
Message-ID: <20220406160123.1272911-2-l.stach@pengutronix.de> (raw)
In-Reply-To: <20220406160123.1272911-1-l.stach@pengutronix.de>
Allow vendor PHY implementations to reset PHYs with different polarity
than the current Gen2 reset.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
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);
--
2.30.2
next prev parent reply other threads:[~2022-04-06 16:01 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-06 16:01 [PATCH v0 00/10] i.MX8MP HDMI support Lucas Stach
2022-04-06 16:01 ` Lucas Stach [this message]
2022-04-07 8:30 ` [PATCH v0 01/10] drm/bridge: dw-hdmi: add low-active PHY reset Neil Armstrong
2022-04-07 8:50 ` Lucas Stach
2022-04-06 16:01 ` [PATCH v0 02/10] dt-bindings: display: imx: add binding for i.MX8MP HDMI TX Lucas Stach
2022-04-06 20:08 ` Rob Herring
2022-04-07 9:15 ` Lucas Stach
2022-04-07 16:59 ` Rob Herring
2022-04-06 16:01 ` [PATCH v0 03/10] drm/imx: add bridge wrapper driver for i.MX8MP DWC HDMI Lucas Stach
2022-04-07 10:02 ` Philipp Zabel
2022-04-06 16:01 ` [PATCH v0 04/10] dt-bindings: display: imx: add binding for i.MX8MP HDMI PVI Lucas Stach
2022-04-06 20:08 ` Rob Herring
2022-04-06 16:01 ` [PATCH v0 05/10] drm/imx: add driver for HDMI TX Parallel Video Interface Lucas Stach
2022-04-07 10:36 ` Philipp Zabel
2022-04-06 16:01 ` [PATCH v0 06/10] dt-bindings: phy: add binding for the i.MX8MP HDMI PHY Lucas Stach
2022-04-06 20:08 ` Rob Herring
2022-04-06 16:01 ` [PATCH v0 07/10] phy: freescale: add Samsung " Lucas Stach
2022-04-07 9:29 ` Philipp Zabel
2022-04-11 11:59 ` Maxime Ripard
2022-04-11 12:20 ` Lucas Stach
2022-04-11 14:07 ` Maxime Ripard
2022-04-06 16:01 ` [PATCH v0 08/10] arm64: dts: imx8mp: add HDMI irqsteer Lucas Stach
2022-04-06 16:01 ` [PATCH v0 09/10] arm64: dts: imx8mp: add HDMI display pipeline Lucas Stach
2022-05-31 8:31 ` (EXT) " Alexander Stein
2022-04-06 16:01 ` [PATCH v0 10/10] arm64: dts: imx8mp-evk: enable HDMI Lucas Stach
2022-04-06 16:10 ` [PATCH v0 00/10] i.MX8MP HDMI support Tim Harvey
2022-04-06 16:27 ` Lucas Stach
2022-04-12 9:18 ` Alexander Stein
2022-04-12 9:41 ` Lucas Stach
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