[PATCH 3/4] mips: octeon: mrvl,octeon_ebb7304.dts: Add MMC DT node

Stefan Roese
2021-03-12T08:48:27Z

Add the MMC DT node to the Octeon EBB7304 DT file including the
regulator node for the MMC power supply.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Aaron Williams <awilliams@marvell.com>
Cc: Chandrakala Chavva <cchavva@marvell.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
---
arch/mips/dts/mrvl,octeon-ebb7304.dts | 57 +++++++++++++++++++++++++++
1 file changed, 57 insertions(+)

diff --git a/arch/mips/dts/mrvl,octeon-ebb7304.dts b/arch/mips/dts/mrvl,octeon-ebb7304.dts
index 993b4f6890..1bb34e1329 100644
--- a/arch/mips/dts/mrvl,octeon-ebb7304.dts
+++ b/arch/mips/dts/mrvl,octeon-ebb7304.dts
@@ -6,16 +6,36 @@
/dts-v1/;

#include "mrvl,cn73xx.dtsi"
+#include <dt-bindings/gpio/gpio.h>

/ {
model = "cavium,ebb7304";
compatible = "cavium,ebb7304";

aliases {
+ mmc0 = &mmc0;
+ mmc1 = &mmc1;
serial0 = &uart0;
spi0 = &spi;
};

+ regulators {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* Power on GPIO 8, active high */
+ reg_mmc_3v3: regulator at 0 {
+ compatible = "regulator-fixed";
+ reg = <0>;
+ regulator-name = "mmc-3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ gpio = <&gpio 8 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+ };
+
chosen {
stdout-path = &uart0;
};
@@ -137,3 +157,40 @@
*/
power = <&gpio 21 0>;
};
+
+&mmc {
+ status = "okay";
+
+ /* The board has two MMC slots
+ * If both are occupied, the speed must be reduced,
+ * as extra data-line load increases slew time,
+ * and dat-skew adjustment does not help significantly.
+ */
+ mmc0: mmc-slot at 0 {
+ compatible = "cavium,octeon-6130-mmc-slot", "mmc-slot";
+ reg = <0>;
+ vqmmc-supply = <&reg_mmc_3v3>;
+ voltage-ranges = <3300 3300>;
+ //spi-max-frequency = <52000000>; // just one
+ spi-max-frequency = <37000000>; // both slots
+ /* bus width can be 1, 4 or 8 */
+ bus-width = <8>; /* new std property */
+ cavium,bus-max-width = <8>; /* custom property */
+ wp-gpios = <&gpio 22 0>; /* active high */
+ cd-gpios = <&gpio 23 1>; /* active low */
+ };
+
+ mmc1: mmc-slot at 1 {
+ compatible = "cavium,octeon-6130-mmc-slot", "mmc-slot";
+ reg = <1>;
+ vqmmc-supply = <&reg_mmc_3v3>;
+ voltage-ranges = <3300 3300>;
+ //spi-max-frequency = <52000000>; // just one
+ spi-max-frequency = <37000000>; // both slots
+ /* bus width can be 1, 4 or 8 */
+ bus-width = <8>; /* new std property */
+ cavium,bus-max-width = <8>; /* custom property */
+ wp-gpios = <&gpio 24 0>; /* active high */
+ cd-gpios = <&gpio 25 1>; /* active low */
+ };
+};
--
2.30.2