arm: dts: Add DTS description for MMC2 am33xx devices

This code has been ported from Linux v5.16.9 arch/arm/boot/dts/am33xx.dtsi
file to allow correct usage of MMC2 controller in U-Boot.

This IP block is a bit specific as it is connected to L3 interconnect bus,
whereas mmc[01] are connected to L4.

Proper configuration of this block (including providing clock) is handled
in ti-sysc.c driver.

Signed-off-by: Lukasz Majewski <lukma@denx.de>

diff --git a/arch/arm/dts/am33xx.dtsi b/arch/arm/dts/am33xx.dtsi
index 5f9b306ddbf85ea6772145a664e2f0211bd0bca4..5871344edbfa3d1731fad2edf6e464b695a117e2 100644 (file)
--- a/arch/arm/dts/am33xx.dtsi
+++ b/arch/arm/dts/am33xx.dtsi
@@ -42,6 +42,7 @@
                spi1 = &spi1;
                mmc0 = &mmc1;
                mmc1 = &mmc2;
+               mmc2 = &mmc3;
        };
 
        cpus {
@@ -303,6 +304,35 @@
                        };
                };
 
+               target-module@47810000 {
+                       compatible = "ti,sysc-omap2", "ti,sysc";
+                       reg = <0x478102fc 0x4>,
+                             <0x47810110 0x4>,
+                             <0x47810114 0x4>;
+                       reg-names = "rev", "sysc", "syss";
+                       ti,sysc-mask = <(SYSC_OMAP2_CLOCKACTIVITY |
+                                        SYSC_OMAP2_ENAWAKEUP |
+                                        SYSC_OMAP2_SOFTRESET |
+                                        SYSC_OMAP2_AUTOIDLE)>;
+                       ti,sysc-sidle = <SYSC_IDLE_FORCE>,
+                                       <SYSC_IDLE_NO>,
+                                       <SYSC_IDLE_SMART>;
+                       ti,syss-mask = <1>;
+                       clocks = <&l3s_clkctrl AM3_L3S_MMC3_CLKCTRL 0>;
+                       clock-names = "fck";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+                       ranges = <0x0 0x47810000 0x1000>;
+
+                       mmc3: mmc@0 {
+                             compatible = "ti,am335-sdhci";
+                             ti,needs-special-reset;
+                             interrupts = <29>;
+                             reg = <0x0 0x1000>;
+                             status = "disabled";
+                       };
+               };
+
                i2c0: i2c@44e0b000 {
                        compatible = "ti,omap4-i2c";
                        #address-cells = <1>;
@@ -359,15 +389,6 @@
                        status = "disabled";
                };
 
-               mmc3: mmc@47810000 {
-                       compatible = "ti,omap4-hsmmc";
-                       ti,hwmods = "mmc3";
-                       ti,needs-special-reset;
-                       interrupts = <29>;
-                       reg = <0x47810000 0x1000>;
-                       status = "disabled";
-               };
-
                wdt2: wdt@44e35000 {
                        compatible = "ti,omap3-wdt";
                        ti,hwmods = "wd_timer2";