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Date: Sat, 2 Apr 2022 13:24:48 +0800
From: Liu Ying <victor.liu@....com>
To: linux-phy@...ts.infradead.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org
Cc: kishon@...com, vkoul@...nel.org, robh+dt@...nel.org,
andrzej.hajda@...el.com, narmstrong@...libre.com,
Laurent.pinchart@...asonboard.com, jonas@...boo.se,
jernej.skrabec@...il.com, airlied@...ux.ie, daniel@...ll.ch,
shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
festevam@...il.com, linux-imx@....com, agx@...xcpu.org,
robert.chiras@....com, martin.kepplinger@...i.sm,
robert.foss@...aro.org
Subject: [PATCH v6 resend 2/5] phy: Add LVDS configuration options
This patch allows LVDS PHYs to be configured through
the generic functions and through a custom structure
added to the generic union.
The parameters added here are based on common LVDS PHY
implementation practices. The set of parameters
should cover all potential users.
Cc: Kishon Vijay Abraham I <kishon@...com>
Cc: Vinod Koul <vkoul@...nel.org>
Cc: NXP Linux Team <linux-imx@....com>
Signed-off-by: Liu Ying <victor.liu@....com>
---
v5->v6:
* Rebase upon v5.17-rc1.
v4->v5:
* Align kernel-doc style to include/linux/phy/phy.h. (Vinod)
* Trivial tweaks.
* Drop Robert's R-b tag.
v3->v4:
* Add Robert's R-b tag.
v2->v3:
* No change.
v1->v2:
* No change.
include/linux/phy/phy-lvds.h | 32 ++++++++++++++++++++++++++++++++
include/linux/phy/phy.h | 4 ++++
2 files changed, 36 insertions(+)
create mode 100644 include/linux/phy/phy-lvds.h
diff --git a/include/linux/phy/phy-lvds.h b/include/linux/phy/phy-lvds.h
new file mode 100644
index 000000000000..7a2f4747f624
--- /dev/null
+++ b/include/linux/phy/phy-lvds.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2020 NXP
+ */
+
+#ifndef __PHY_LVDS_H_
+#define __PHY_LVDS_H_
+
+/**
+ * struct phy_configure_opts_lvds - LVDS configuration set
+ * @bits_per_lane_and_dclk_cycle: Number of bits per data lane and
+ * differential clock cycle.
+ * @differential_clk_rate: Clock rate, in Hertz, of the LVDS
+ * differential clock.
+ * @lanes: Number of active, consecutive,
+ * data lanes, starting from lane 0,
+ * used for the transmissions.
+ * @is_slave: Boolean, true if the phy is a slave
+ * which works together with a master
+ * phy to support dual link transmission,
+ * otherwise a regular phy or a master phy.
+ *
+ * This structure is used to represent the configuration state of a LVDS phy.
+ */
+struct phy_configure_opts_lvds {
+ unsigned int bits_per_lane_and_dclk_cycle;
+ unsigned long differential_clk_rate;
+ unsigned int lanes;
+ bool is_slave;
+};
+
+#endif /* __PHY_LVDS_H_ */
diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index f3286f4cd306..b1413757fcc3 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -17,6 +17,7 @@
#include <linux/regulator/consumer.h>
#include <linux/phy/phy-dp.h>
+#include <linux/phy/phy-lvds.h>
#include <linux/phy/phy-mipi-dphy.h>
struct phy;
@@ -57,10 +58,13 @@ enum phy_media {
* the MIPI_DPHY phy mode.
* @dp: Configuration set applicable for phys supporting
* the DisplayPort protocol.
+ * @lvds: Configuration set applicable for phys supporting
+ * the LVDS phy mode.
*/
union phy_configure_opts {
struct phy_configure_opts_mipi_dphy mipi_dphy;
struct phy_configure_opts_dp dp;
+ struct phy_configure_opts_lvds lvds;
};
/**
--
2.25.1
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