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
next prev parent reply other threads:[~2021-02-25 9:54 UTC|newest]
Thread overview: 4+ 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 ` [RFC 1/2] ARM: dts: Fix-up EMMC2 controller's frequency Nicolas Saenz Julienne
2021-02-25 9:52 ` Nicolas Saenz Julienne [this message]
2021-03-09 8:14 ` [RFC 0/2] sdhci-iproc CMD timeouts Ulf Hansson
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