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From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To: linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org,
	devicetree@vger.kernel.org,
	bcm-kernel-feedback-list@broadcom.com,
	linux-rpi-kernel@lists.infradead.org,
	Adrian Hunter <adrian.hunter@intel.com>,
	Ray Jui <rjui@broadcom.com>,
	Scott Branden <sbranden@broadcom.com>
Cc: f.fainelli@gmail.com, phil@raspberrypi.com,
	tim.gover@raspberrypi.com, alcooperx@gmail.com,
	Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
	Ulf Hansson <ulf.hansson@linaro.org>,
	linux-kernel@vger.kernel.org
Subject: [RFC 2/2] mmc: sdhci-iproc: Set clock frequency as per DT
Date: Thu, 25 Feb 2021 10:52:16 +0100	[thread overview]
Message-ID: <20210225095216.28591-3-nsaenzjulienne@suse.de> (raw)
In-Reply-To: <20210225095216.28591-1-nsaenzjulienne@suse.de>

devicetree might request a clock frequency different from whatever is
set-up by the bootloader. Make sure to setup the new rate.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/mmc/host/sdhci-iproc.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c
index ddeaf8e1f72f..536c382e2486 100644
--- a/drivers/mmc/host/sdhci-iproc.c
+++ b/drivers/mmc/host/sdhci-iproc.c
@@ -358,6 +358,16 @@ static int sdhci_iproc_probe(struct platform_device *pdev)
 			ret = PTR_ERR(pltfm_host->clk);
 			goto err;
 		}
+
+		if (pltfm_host->clock) {
+			ret = clk_set_rate(pltfm_host->clk, pltfm_host->clock);
+			if (ret) {
+				dev_err(dev, "failed to set host clk at %u Hz\n",
+					pltfm_host->clock);
+				goto err;
+			}
+		}
+
 		ret = clk_prepare_enable(pltfm_host->clk);
 		if (ret) {
 			dev_err(dev, "failed to enable host clk\n");
-- 
2.30.1


WARNING: multiple messages have this Message-ID (diff)
From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
To: linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org,
	devicetree@vger.kernel.org,
	bcm-kernel-feedback-list@broadcom.com,
	linux-rpi-kernel@lists.infradead.org,
	Adrian Hunter <adrian.hunter@intel.com>,
	Ray Jui <rjui@broadcom.com>,
	Scott Branden <sbranden@broadcom.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>,
	f.fainelli@gmail.com, tim.gover@raspberrypi.com,
	alcooperx@gmail.com, linux-kernel@vger.kernel.org,
	phil@raspberrypi.com,
	Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Subject: [RFC 2/2] mmc: sdhci-iproc: Set clock frequency as per DT
Date: Thu, 25 Feb 2021 10:52:16 +0100	[thread overview]
Message-ID: <20210225095216.28591-3-nsaenzjulienne@suse.de> (raw)
In-Reply-To: <20210225095216.28591-1-nsaenzjulienne@suse.de>

devicetree might request a clock frequency different from whatever is
set-up by the bootloader. Make sure to setup the new rate.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/mmc/host/sdhci-iproc.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c
index ddeaf8e1f72f..536c382e2486 100644
--- a/drivers/mmc/host/sdhci-iproc.c
+++ b/drivers/mmc/host/sdhci-iproc.c
@@ -358,6 +358,16 @@ static int sdhci_iproc_probe(struct platform_device *pdev)
 			ret = PTR_ERR(pltfm_host->clk);
 			goto err;
 		}
+
+		if (pltfm_host->clock) {
+			ret = clk_set_rate(pltfm_host->clk, pltfm_host->clock);
+			if (ret) {
+				dev_err(dev, "failed to set host clk at %u Hz\n",
+					pltfm_host->clock);
+				goto err;
+			}
+		}
+
 		ret = clk_prepare_enable(pltfm_host->clk);
 		if (ret) {
 			dev_err(dev, "failed to enable host clk\n");
-- 
2.30.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2021-02-25  9:54 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-25  9:52 [RFC 0/2] sdhci-iproc CMD timeouts Nicolas Saenz Julienne
2021-02-25  9:52 ` Nicolas Saenz Julienne
2021-02-25  9:52 ` [RFC 1/2] ARM: dts: Fix-up EMMC2 controller's frequency Nicolas Saenz Julienne
2021-02-25  9:52   ` Nicolas Saenz Julienne
2021-02-25  9:52 ` Nicolas Saenz Julienne [this message]
2021-02-25  9:52   ` [RFC 2/2] mmc: sdhci-iproc: Set clock frequency as per DT Nicolas Saenz Julienne
2021-03-09  8:14 ` [RFC 0/2] sdhci-iproc CMD timeouts Ulf Hansson
2021-03-09  8:14   ` Ulf Hansson

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