clk: bcm2835: Add BCM2711_CLOCK_EMMC2 support

commit 42de9ad upstream.

The new BCM2711 supports an additional clock for the emmc2 block.
So add a new compatible and register this clock only for BCM2711.

Signed-off-by: Stefan Wahren <[email protected]>
Reviewed-by: Matthias Brugger <[email protected]>
Acked-by: Eric Anholt <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>

Author: lategoodbye

arch/arm/boot/dts/bcm2838.dtsi

@@ -210,6 +210,7 @@
 			compatible = "brcm,bcm2711-emmc2";
 			status = "okay";
 			interrupts = <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clocks BCM2711_CLOCK_EMMC2>;
 			reg = <0x7e340000 0x100>;
 		};
 

drivers/clk/bcm/clk-bcm2835.c

@@ -124,6 +124,8 @@
 #define CM_AVEODIV		0x1bc
 #define CM_EMMCCTL		0x1c0
 #define CM_EMMCDIV		0x1c4
+#define CM_EMMC2CTL		0x1d0
+#define CM_EMMC2DIV		0x1d4
 
 /* General bits for the CM_*CTL regs */
 # define CM_ENABLE			BIT(4)
@@ -302,7 +304,8 @@
 #define VCMSG_ID_CORE_CLOCK     4
 
 #define SOC_BCM2835		BIT(0)
-#define SOC_ALL			(SOC_BCM2835)
+#define SOC_BCM2711		BIT(1)
+#define SOC_ALL			(SOC_BCM2835 | SOC_BCM2711)
 
 /*
  * Names of clocks used within the driver that need to be replaced
@@ -2102,6 +2105,16 @@ static const struct bcm2835_clk_desc clk_desc_array[] = {
 		.frac_bits = 8,
 		.tcnt_mux = 39),
 
+	/* EMMC2 clock (only available for BCM2711) */
+	[BCM2711_CLOCK_EMMC2]	= REGISTER_PER_CLK(
+		SOC_BCM2711,
+		.name = "emmc2",
+		.ctl_reg = CM_EMMC2CTL,
+		.div_reg = CM_EMMC2DIV,
+		.int_bits = 4,
+		.frac_bits = 8,
+		.tcnt_mux = 42),
+
 	/* General purpose (GPIO) clocks */
 	[BCM2835_CLOCK_GP0]	= REGISTER_PER_CLK(
 		SOC_ALL,
@@ -2376,8 +2389,13 @@ static const struct cprman_plat_data cprman_bcm2835_plat_data = {
 	.soc = SOC_BCM2835,
 };
 
+static const struct cprman_plat_data cprman_bcm2711_plat_data = {
+	.soc = SOC_BCM2711,
+};
+
 static const struct of_device_id bcm2835_clk_of_match[] = {
 	{ .compatible = "brcm,bcm2835-cprman", .data = &cprman_bcm2835_plat_data },
+	{ .compatible = "brcm,bcm2711-cprman", .data = &cprman_bcm2711_plat_data },
 	{}
 };
 MODULE_DEVICE_TABLE(of, bcm2835_clk_of_match);

include/dt-bindings/clock/bcm2835.h

@@ -66,3 +66,5 @@
 #define BCM2835_CLOCK_DSI1E		48
 #define BCM2835_CLOCK_DSI0P		49
 #define BCM2835_CLOCK_DSI1P		50
+
+#define BCM2711_CLOCK_EMMC2		51