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clk: raspberrypi: register platform device for raspberrypi-cpufreq

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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>
This commit is contained in:
Nicolas Saenz Julienne 2019-06-12 20:24:57 +02:00 committed by Stephen Boyd
parent 91f2cf4a6b
commit e2bb18347c
1 changed files with 15 additions and 0 deletions
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15
drivers/clk/bcm/clk-raspberrypi.c
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@ -34,6 +34,7 @@
struct raspberrypi_clk { struct raspberrypi_clk {
struct device *dev; struct device *dev;
struct rpi_firmware *firmware; struct rpi_firmware *firmware;
struct platform_device *cpufreq;
unsigned long min_rate; unsigned long min_rate;
unsigned long max_rate; unsigned long max_rate;
@ -272,6 +273,7 @@ static int raspberrypi_clk_probe(struct platform_device *pdev)
rpi->dev = dev; rpi->dev = dev;
rpi->firmware = firmware; rpi->firmware = firmware;
platform_set_drvdata(pdev, rpi);
ret = raspberrypi_register_pllb(rpi); ret = raspberrypi_register_pllb(rpi);
if (ret) { if (ret) {
@ -283,6 +285,18 @@ static int raspberrypi_clk_probe(struct platform_device *pdev)
if (ret) if (ret)
return 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; return 0;
} }
@ -291,6 +305,7 @@ static struct platform_driver raspberrypi_clk_driver = {
.name = "raspberrypi-clk", .name = "raspberrypi-clk",
}, },
.probe = raspberrypi_clk_probe, .probe = raspberrypi_clk_probe,
.remove = raspberrypi_clk_remove,
}; };
module_platform_driver(raspberrypi_clk_driver); module_platform_driver(raspberrypi_clk_driver);