brcm2708: update to latest patches from RPi Foundation

[openwrt/staging/chunkeey.git] / target / linux / brcm2708 / patches-4.19 / 950-0763-clk-raspberrypi-register-platform-device-for-raspber.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0763-clk-raspberrypi-register-platform-device-for-raspber.patch b/target/linux/brcm2708/patches-4.19/950-0763-clk-raspberrypi-register-platform-device-for-raspber.patch
new file mode 100644 (file)
index 0000000..be4d834
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0763-clk-raspberrypi-register-platform-device-for-raspber.patch
@@ -0,0 +1,65 @@
+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);
+