linux-kernel - [PATCH v4 2/9] phy: dphy: Change units of wakeup and init parameters

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Date:   Wed,  9 Jan 2019 10:33:19 +0100
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Kishon Vijay Abraham I <kishon@...com>
Cc:     Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        linux-media@...r.kernel.org,
        Archit Taneja <architt@...eaurora.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Chen-Yu Tsai <wens@...e.org>, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        Krzysztof Witos <kwitos@...ence.com>,
        Rafal Ciepiela <rafalc@...ence.com>,
        Maxime Ripard <maxime.ripard@...tlin.com>,
        Sakari Ailus <sakari.ailus@....fi>
Subject: [PATCH v4 2/9] phy: dphy: Change units of wakeup and init parameters

The Init and wakeup D-PHY parameters are in the micro/milliseconds range,
putting the values real close to the types limits if they were in
picoseconds.

Move them to microseconds which should be better fit.

Suggested-by: Sakari Ailus <sakari.ailus@....fi>
Signed-off-by: Maxime Ripard <maxime.ripard@...tlin.com>
---
 drivers/phy/phy-core-mipi-dphy.c  | 8 ++++----
 include/linux/phy/phy-mipi-dphy.h | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/phy/phy-core-mipi-dphy.c b/drivers/phy/phy-core-mipi-dphy.c
index 465fa1b91a5f..14e0551cd319 100644
--- a/drivers/phy/phy-core-mipi-dphy.c
+++ b/drivers/phy/phy-core-mipi-dphy.c
@@ -65,12 +65,12 @@ int phy_mipi_dphy_get_default_config(unsigned long pixel_clock,
 	 */
 	cfg->hs_trail = max(4 * 8 * ui, 60000 + 4 * 4 * ui);
 
-	cfg->init = 100000000;
+	cfg->init = 100;
 	cfg->lpx = 60000;
 	cfg->ta_get = 5 * cfg->lpx;
 	cfg->ta_go = 4 * cfg->lpx;
 	cfg->ta_sure = 2 * cfg->lpx;
-	cfg->wakeup = 1000000000;
+	cfg->wakeup = 1000;
 
 	cfg->hs_clk_rate = hs_clk_rate;
 	cfg->lanes = lanes;
@@ -143,7 +143,7 @@ int phy_mipi_dphy_config_validate(struct phy_configure_opts_mipi_dphy *cfg)
 	if (cfg->hs_trail < max(8 * ui, 60000 + 4 * ui))
 		return -EINVAL;
 
-	if (cfg->init < 100000000)
+	if (cfg->init < 100)
 		return -EINVAL;
 
 	if (cfg->lpx < 50000)
@@ -158,7 +158,7 @@ int phy_mipi_dphy_config_validate(struct phy_configure_opts_mipi_dphy *cfg)
 	if (cfg->ta_sure < cfg->lpx || cfg->ta_sure > (2 * cfg->lpx))
 		return -EINVAL;
 
-	if (cfg->wakeup < 1000000000)
+	if (cfg->wakeup < 1000)
 		return -EINVAL;
 
 	return 0;
diff --git a/include/linux/phy/phy-mipi-dphy.h b/include/linux/phy/phy-mipi-dphy.h
index 9cf97cd1d303..627d28080d3a 100644
--- a/include/linux/phy/phy-mipi-dphy.h
+++ b/include/linux/phy/phy-mipi-dphy.h
@@ -190,10 +190,10 @@ struct phy_configure_opts_mipi_dphy {
 	/**
 	 * @init:
 	 *
-	 * Time, in picoseconds for the initialization period to
+	 * Time, in microseconds for the initialization period to
 	 * complete.
 	 *
-	 * Minimum value: 100000000 ps
+	 * Minimum value: 100 us
 	 */
 	unsigned int		init;
 
@@ -244,11 +244,11 @@ struct phy_configure_opts_mipi_dphy {
 	/**
 	 * @wakeup:
 	 *
-	 * Time, in picoseconds, that a transmitter drives a Mark-1
+	 * Time, in microseconds, that a transmitter drives a Mark-1
 	 * state prior to a Stop state in order to initiate an exit
 	 * from ULPS.
 	 *
-	 * Minimum value: 1000000000 ps
+	 * Minimum value: 1000 us
 	 */
 	unsigned int		wakeup;
 
-- 
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