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From: Maxime Ripard <maxime@cerno.tech>
To: Mike Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>
Cc: linux-clk@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Dave Stevenson <dave.stevenson@raspberrypi.com>,
	Phil Elwell <phil@raspberrypi.com>,
	Tim Gover <tim.gover@raspberrypi.com>,
	Dom Cobley <dom@raspberrypi.com>,
	Maxime Ripard <maxime@cerno.tech>
Subject: [PATCH v3 10/10] drm/vc4: hdmi: Remove clock rate initialization
Date: Thu, 20 Jan 2022 15:34:17 +0100	[thread overview]
Message-ID: <20220120143417.543744-11-maxime@cerno.tech> (raw)
In-Reply-To: <20220120143417.543744-1-maxime@cerno.tech>

Now that the clock driver makes sure we never end up with a rate of 0,
the HDMI driver doesn't need to care anymore.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 053fbaf765ca..43aced269082 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -2543,19 +2543,6 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 			vc4_hdmi->disable_4kp60 = true;
 	}
 
-	/*
-	 * If we boot without any cable connected to the HDMI connector,
-	 * the firmware will skip the HSM initialization and leave it
-	 * with a rate of 0, resulting in a bus lockup when we're
-	 * accessing the registers even if it's enabled.
-	 *
-	 * Let's put a sensible default at runtime_resume so that we
-	 * don't end up in this situation.
-	 */
-	ret = clk_set_min_rate(vc4_hdmi->hsm_clock, HSM_MIN_CLOCK_FREQ);
-	if (ret)
-		goto err_put_ddc;
-
 	/*
 	 * We need to have the device powered up at this point to call
 	 * our reset hook and for the CEC init.
-- 
2.34.1


WARNING: multiple messages have this Message-ID (diff)
From: Maxime Ripard <maxime@cerno.tech>
To: Mike Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>
Cc: Dom Cobley <dom@raspberrypi.com>,
	Tim Gover <tim.gover@raspberrypi.com>,
	Dave Stevenson <dave.stevenson@raspberrypi.com>,
	dri-devel@lists.freedesktop.org, linux-clk@vger.kernel.org,
	Maxime Ripard <maxime@cerno.tech>,
	Phil Elwell <phil@raspberrypi.com>
Subject: [PATCH v3 10/10] drm/vc4: hdmi: Remove clock rate initialization
Date: Thu, 20 Jan 2022 15:34:17 +0100	[thread overview]
Message-ID: <20220120143417.543744-11-maxime@cerno.tech> (raw)
In-Reply-To: <20220120143417.543744-1-maxime@cerno.tech>

Now that the clock driver makes sure we never end up with a rate of 0,
the HDMI driver doesn't need to care anymore.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 053fbaf765ca..43aced269082 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -2543,19 +2543,6 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 			vc4_hdmi->disable_4kp60 = true;
 	}
 
-	/*
-	 * If we boot without any cable connected to the HDMI connector,
-	 * the firmware will skip the HSM initialization and leave it
-	 * with a rate of 0, resulting in a bus lockup when we're
-	 * accessing the registers even if it's enabled.
-	 *
-	 * Let's put a sensible default at runtime_resume so that we
-	 * don't end up in this situation.
-	 */
-	ret = clk_set_min_rate(vc4_hdmi->hsm_clock, HSM_MIN_CLOCK_FREQ);
-	if (ret)
-		goto err_put_ddc;
-
 	/*
 	 * We need to have the device powered up at this point to call
 	 * our reset hook and for the CEC init.
-- 
2.34.1


  parent reply	other threads:[~2022-01-20 14:34 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-20 14:34 [PATCH v3 00/10] clk: Improve clock range handling Maxime Ripard
2022-01-20 14:34 ` Maxime Ripard
2022-01-20 14:34 ` [PATCH v3 01/10] clk: Add Kunit tests for rate Maxime Ripard
2022-01-20 14:34   ` Maxime Ripard
2022-01-20 21:31   ` Stephen Boyd
2022-01-20 21:31     ` Stephen Boyd
2022-01-20 21:56     ` Daniel Latypov
2022-01-20 21:56       ` Daniel Latypov
2022-01-21  4:34       ` Stephen Boyd
2022-01-21  4:34         ` Stephen Boyd
2022-01-21  5:25         ` Daniel Latypov
2022-01-21  5:25           ` Daniel Latypov
2022-01-22  1:51           ` Stephen Boyd
2022-01-22  1:51             ` Stephen Boyd
2022-01-20 14:34 ` [PATCH v3 02/10] clk: Always clamp the rounded rate Maxime Ripard
2022-01-20 14:34   ` Maxime Ripard
2022-01-20 14:34 ` [PATCH v3 03/10] clk: Use clamp instead of open-coding our own Maxime Ripard
2022-01-20 14:34   ` Maxime Ripard
2022-01-20 14:34 ` [PATCH v3 04/10] clk: Always set the rate on clk_set_range_rate Maxime Ripard
2022-01-20 14:34   ` Maxime Ripard
2022-01-20 14:34 ` [PATCH v3 05/10] clk: Add clk_drop_range Maxime Ripard
2022-01-20 14:34   ` Maxime Ripard
2022-01-20 14:34 ` [PATCH v3 06/10] clk: bcm: rpi: Add variant structure Maxime Ripard
2022-01-20 14:34   ` Maxime Ripard
2022-01-20 14:34 ` [PATCH v3 07/10] clk: bcm: rpi: Set a default minimum rate Maxime Ripard
2022-01-20 14:34   ` Maxime Ripard
2022-01-20 14:34 ` [PATCH v3 08/10] clk: bcm: rpi: Run some clocks at the minimum rate allowed Maxime Ripard
2022-01-20 14:34   ` Maxime Ripard
2022-01-20 14:34 ` [PATCH v3 09/10] drm/vc4: Add logging and comments Maxime Ripard
2022-01-20 14:34   ` Maxime Ripard
2022-01-20 14:34 ` Maxime Ripard [this message]
2022-01-20 14:34   ` [PATCH v3 10/10] drm/vc4: hdmi: Remove clock rate initialization Maxime Ripard

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