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phy: Add DisplayPort configuration options

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Allow DisplayPort PHYs to be configured through the generic
functions through a custom structure added to the generic union.
The configuration structure is used for reconfiguration of
DisplayPort PHYs during link training operation.

The parameters added here are the ones defined in the DisplayPort
spec v1.4 which include link rate, number of lanes, voltage swing
and pre-emphasis.

Add the DisplayPort phy mode to the generic phy_mode enum.

Signed-off-by: Yuti Amonkar <yamonkar@cadence.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Yuti Amonkar
2020-01-06 13:22:40 +01:00
committed by Kishon Vijay Abraham I
parent e7b4aaf051
commit 42d068472d
2 changed files with 100 additions and 0 deletions
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5
include/linux/phy/phy.h
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@@ -16,6 +16,7 @@
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/phy/phy-dp.h>
#include <linux/phy/phy-mipi-dphy.h>
struct phy;
@@ -40,6 +41,7 @@ enum phy_mode {
PHY_MODE_MIPI_DPHY,
PHY_MODE_SATA,
PHY_MODE_LVDS,
PHY_MODE_DP
};
/**
@@ -47,9 +49,12 @@ enum phy_mode {
*
* @mipi_dphy: Configuration set applicable for phys supporting
* the MIPI_DPHY phy mode.
* @dp: Configuration set applicable for phys supporting
* the DisplayPort protocol.
*/
union phy_configure_opts {
struct phy_configure_opts_mipi_dphy mipi_dphy;
struct phy_configure_opts_dp dp;
};
/**