[PATCH v8 12/12] firmware: raspberrypi: use drvdata to register rtc driver

[Gregor Herburger]

There are two bcm2712 steppings available that are not compatible.
Therefore we have "raspberrypi,5-model-b-d0" and
"raspberrypi,5-model-b". Some features of the Raspberry Pi are only
available on the 5th generation, e.g. the private OTP register and the
RTC clock.

Use the newly added fw->soc data to decide whether to register the rtc
driver.

Signed-off-by: Gregor Herburger <gregor.herburger@xxxxxxxxxxxxx>
---
 drivers/firmware/raspberrypi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
index 755f845754c1c..0cf893eb8b786 100644
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -237,13 +237,14 @@ static void rpi_register_clk_driver(struct device *dev)
 
 static void rpi_register_rtc_driver(struct device *dev)
 {
+	struct rpi_firmware *fw = dev_get_drvdata(dev);
 	struct platform_device *pdev;
 
 	/*
 	 * Check if our model of Raspberry Pi board is from the 5th gen
 	 * as the RTC is only present on that model.
 	 */
-	if (!of_machine_is_compatible("brcm,bcm2712"))
+	if (fw->soc != RPI_FIRMWARE_SOC_BCM2712)
 		return;
 
 	pdev = platform_device_register_data(dev, "raspberrypi-rtc",

-- 
2.47.3