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From b39d5caa499559be6c309b9fd8f8b2f992504e18 Mon Sep 17 00:00:00 2001
From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Date: Wed, 12 Jun 2019 20:24:57 +0200
Subject: [PATCH] clk: raspberrypi: register platform device for
raspberrypi-cpufreq
Commit e2bb18347c8e5c4187831f3700c380e3c759601a upstream.
As 'clk-raspberrypi' depends on RPi's firmware interface, which might be
configured as a module, the cpu clock might not be available for the
cpufreq driver during it's init process. So we register the
'raspberrypi-cpufreq' platform device after the probe sequence succeeds.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
---
drivers/clk/bcm/clk-raspberrypi.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
--- a/drivers/clk/bcm/clk-raspberrypi.c
+++ b/drivers/clk/bcm/clk-raspberrypi.c
@@ -34,6 +34,7 @@
struct raspberrypi_clk {
struct device *dev;
struct rpi_firmware *firmware;
+ struct platform_device *cpufreq;
unsigned long min_rate;
unsigned long max_rate;
@@ -272,6 +273,7 @@ static int raspberrypi_clk_probe(struct
rpi->dev = dev;
rpi->firmware = firmware;
+ platform_set_drvdata(pdev, rpi);
ret = raspberrypi_register_pllb(rpi);
if (ret) {
@@ -283,6 +285,18 @@ static int raspberrypi_clk_probe(struct
if (ret)
return ret;
+ rpi->cpufreq = platform_device_register_data(dev, "raspberrypi-cpufreq",
+ -1, NULL, 0);
+
+ return 0;
+}
+
+static int raspberrypi_clk_remove(struct platform_device *pdev)
+{
+ struct raspberrypi_clk *rpi = platform_get_drvdata(pdev);
+
+ platform_device_unregister(rpi->cpufreq);
+
return 0;
}
@@ -291,6 +305,7 @@ static struct platform_driver raspberryp
.name = "raspberrypi-clk",
},
.probe = raspberrypi_clk_probe,
+ .remove = raspberrypi_clk_remove,
};
module_platform_driver(raspberrypi_clk_driver);
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