arm64: dts: ti: iot2050: Prepare for adding 2nd-generation boards

The current IOT2050 devices are Product Generation 1 (PG1), using SR1.0
AM65x silicon. Upcoming PG2 devices will use SR2.x SoCs and will
therefore need separate device trees. Prepare for that by factoring out
common bits that will be shared across both generations.

At this chance, drop a link to the product homepage to in the top-level
dts files. Also fix a typo in my email address in some headers.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/31fece05f9728a852c0632985c4fa537cced4ece.1632657917.git.jan.kiszka@web.de

6 files changed, 178 insertions, 125 deletions

diff --git a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common-pg1.dtsi b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common-pg1.dtsi
new file mode 100644
index 000000000000..51f902fa35a7
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common-pg1.dtsi
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) Siemens AG, 2021
+ *
+ * Authors:
+ *   Jan Kiszka <jan.kiszka@siemens.com>
+ *
+ * Common bits of the IOT2050 Basic and Advanced variants, PG1
+ */
+
+&dss {
+	assigned-clocks = <&k3_clks 67 2>;
+	assigned-clock-parents = <&k3_clks 67 5>;
+};
+
+&serdes0 {
+	status = "disabled";
+};
+
+&sdhci1 {
+	no-1-8-v;
+};
+
+&tx_pru0_0 {
+	status = "disabled";
+};
+
+&tx_pru0_1 {
+	status = "disabled";
+};
+
+&tx_pru1_0 {
+	status = "disabled";
+};
+
+&tx_pru1_1 {
+	status = "disabled";
+};
+
+&tx_pru2_0 {
+	status = "disabled";
+};
+
+&tx_pru2_1 {
+	status = "disabled";
+};
diff --git a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
index b29537088289..65da226847f4 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
@@ -4,13 +4,11 @@
  *
  * Authors:
  *   Le Jin <le.jin@siemens.com>
- *   Jan Kiszka <jan.kiszk@siemens.com>
+ *   Jan Kiszka <jan.kiszka@siemens.com>
  *
- * Common bits of the IOT2050 Basic and Advanced variants
+ * Common bits of the IOT2050 Basic and Advanced variants, PG1 and PG2
  */
 
-/dts-v1/;
-
 #include "k3-am654.dtsi"
 #include <dt-bindings/phy/phy.h>
 
@@ -557,7 +555,6 @@
 	pinctrl-0 = <&main_mmc1_pins_default>;
 	ti,driver-strength-ohm = <50>;
 	disable-wp;
-	no-1-8-v;
 };
 
 &usb0 {
@@ -631,10 +628,6 @@
 	};
 };
 
-&serdes0 {
-	status = "disabled";
-};
-
 &pcie0_rc {
 	status = "disabled";
 };
@@ -738,27 +731,3 @@
 &icssg2_mdio {
 	status = "disabled";
 };
-
-&tx_pru0_0 {
-	status = "disabled";
-};
-
-&tx_pru0_1 {
-	status = "disabled";
-};
-
-&tx_pru1_0 {
-	status = "disabled";
-};
-
-&tx_pru1_1 {
-	status = "disabled";
-};
-
-&tx_pru2_0 {
-	status = "disabled";
-};
-
-&tx_pru2_1 {
-	status = "disabled";
-};
diff --git a/arch/arm64/boot/dts/ti/k3-am6528-iot2050-basic-common.dtsi b/arch/arm64/boot/dts/ti/k3-am6528-iot2050-basic-common.dtsi
new file mode 100644
index 000000000000..4a9bf7d7c07d
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am6528-iot2050-basic-common.dtsi
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) Siemens AG, 2018-2021
+ *
+ * Authors:
+ *   Le Jin <le.jin@siemens.com>
+ *   Jan Kiszka <jan.kiszka@siemens.com>
+ *
+ * Common bits of the IOT2050 Basic variant, PG1 and PG2
+ */
+
+#include "k3-am65-iot2050-common.dtsi"
+
+/ {
+	memory@80000000 {
+		device_type = "memory";
+		/* 1G RAM */
+		reg = <0x00000000 0x80000000 0x00000000 0x40000000>;
+	};
+
+	cpus {
+		cpu-map {
+			/delete-node/ cluster1;
+		};
+		/delete-node/ cpu@100;
+		/delete-node/ cpu@101;
+	};
+
+	/delete-node/ l2-cache1;
+};
+
+/* eMMC */
+&sdhci0 {
+	status = "disabled";
+};
+
+&main_pmx0 {
+	main_uart0_pins_default: main-uart0-pins-default {
+		pinctrl-single,pins = <
+			AM65X_IOPAD(0x01e4, PIN_INPUT,  0)  /* (AF11) UART0_RXD */
+			AM65X_IOPAD(0x01e8, PIN_OUTPUT, 0)  /* (AE11) UART0_TXD */
+			AM65X_IOPAD(0x01ec, PIN_INPUT,  0)  /* (AG11) UART0_CTSn */
+			AM65X_IOPAD(0x01f0, PIN_OUTPUT, 0)  /* (AD11) UART0_RTSn */
+			AM65X_IOPAD(0x0188, PIN_INPUT,  1)  /* (D25) UART0_DCDn */
+			AM65X_IOPAD(0x018c, PIN_INPUT,  1)  /* (B26) UART0_DSRn */
+			AM65X_IOPAD(0x0190, PIN_OUTPUT, 1)  /* (A24) UART0_DTRn */
+			AM65X_IOPAD(0x0194, PIN_INPUT,  1)  /* (E24) UART0_RIN */
+		>;
+	};
+};
+
+&main_uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_uart0_pins_default>;
+};
+
+&mcu_r5fss0 {
+	/* lock-step mode not supported on Basic boards */
+	ti,cluster-mode = <0>;
+};
diff --git a/arch/arm64/boot/dts/ti/k3-am6528-iot2050-basic.dts b/arch/arm64/boot/dts/ti/k3-am6528-iot2050-basic.dts
index 94bb5dd39122..87928ff28214 100644
--- a/arch/arm64/boot/dts/ti/k3-am6528-iot2050-basic.dts
+++ b/arch/arm64/boot/dts/ti/k3-am6528-iot2050-basic.dts
@@ -4,63 +4,21 @@
  *
  * Authors:
  *   Le Jin <le.jin@siemens.com>
- *   Jan Kiszka <jan.kiszk@siemens.com>
+ *   Jan Kiszka <jan.kiszka@siemens.com>
  *
- * AM6528-based (dual-core) IOT2050 Basic variant
+ * AM6528-based (dual-core) IOT2050 Basic variant, Product Generation 1
  * 1 GB RAM, no eMMC, main_uart0 on connector X30
+ *
+ * Product homepage:
+ * https://new.siemens.com/global/en/products/automation/pc-based/iot-gateways/simatic-iot2050.html
  */
 
 /dts-v1/;
 
-#include "k3-am65-iot2050-common.dtsi"
+#include "k3-am6528-iot2050-basic-common.dtsi"
+#include "k3-am65-iot2050-common-pg1.dtsi"
 
 / {
 	compatible = "siemens,iot2050-basic", "ti,am654";
 	model = "SIMATIC IOT2050 Basic";
-
-	memory@80000000 {
-		device_type = "memory";
-		/* 1G RAM */
-		reg = <0x00000000 0x80000000 0x00000000 0x40000000>;
-	};
-
-	cpus {
-		cpu-map {
-			/delete-node/ cluster1;
-		};
-		/delete-node/ cpu@100;
-		/delete-node/ cpu@101;
-	};
-
-	/delete-node/ l2-cache1;
-};
-
-/* eMMC */
-&sdhci0 {
-	status = "disabled";
-};
-
-&main_pmx0 {
-	main_uart0_pins_default: main-uart0-pins-default {
-		pinctrl-single,pins = <
-			AM65X_IOPAD(0x01e4, PIN_INPUT,  0)  /* (AF11) UART0_RXD */
-			AM65X_IOPAD(0x01e8, PIN_OUTPUT, 0)  /* (AE11) UART0_TXD */
-			AM65X_IOPAD(0x01ec, PIN_INPUT,  0)  /* (AG11) UART0_CTSn */
-			AM65X_IOPAD(0x01f0, PIN_OUTPUT, 0)  /* (AD11) UART0_RTSn */
-			AM65X_IOPAD(0x0188, PIN_INPUT,  1)  /* (D25) UART0_DCDn */
-			AM65X_IOPAD(0x018c, PIN_INPUT,  1)  /* (B26) UART0_DSRn */
-			AM65X_IOPAD(0x0190, PIN_OUTPUT, 1)  /* (A24) UART0_DTRn */
-			AM65X_IOPAD(0x0194, PIN_INPUT,  1)  /* (E24) UART0_RIN */
-		>;
-	};
-};
-
-&main_uart0 {
-	pinctrl-names = "default";
-	pinctrl-0 = <&main_uart0_pins_default>;
-};
-
-&mcu_r5fss0 {
-	/* lock-step mode not supported on this board */
-	ti,cluster-mode = <0>;
 };
diff --git a/arch/arm64/boot/dts/ti/k3-am6548-iot2050-advanced-common.dtsi b/arch/arm64/boot/dts/ti/k3-am6548-iot2050-advanced-common.dtsi
new file mode 100644
index 000000000000..d25e8b26187f
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am6548-iot2050-advanced-common.dtsi
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) Siemens AG, 2018-2021
+ *
+ * Authors:
+ *   Le Jin <le.jin@siemens.com>
+ *   Jan Kiszka <jan.kiszka@siemens.com>
+ *
+ * Common bits of the IOT2050 Advanced variant, PG1 and PG2
+ */
+
+/dts-v1/;
+
+#include "k3-am65-iot2050-common.dtsi"
+
+/ {
+	memory@80000000 {
+		device_type = "memory";
+		/* 2G RAM */
+		reg = <0x00000000 0x80000000 0x00000000 0x80000000>;
+	};
+};
+
+&main_pmx0 {
+	main_mmc0_pins_default: main-mmc0-pins-default {
+		pinctrl-single,pins = <
+			AM65X_IOPAD(0x01a8, PIN_INPUT_PULLDOWN, 0)  /* (B25) MMC0_CLK */
+			AM65X_IOPAD(0x01ac, PIN_INPUT_PULLUP,   0)  /* (B27) MMC0_CMD */
+			AM65X_IOPAD(0x01a4, PIN_INPUT_PULLUP,   0)  /* (A26) MMC0_DAT0 */
+			AM65X_IOPAD(0x01a0, PIN_INPUT_PULLUP,   0)  /* (E25) MMC0_DAT1 */
+			AM65X_IOPAD(0x019c, PIN_INPUT_PULLUP,   0)  /* (C26) MMC0_DAT2 */
+			AM65X_IOPAD(0x0198, PIN_INPUT_PULLUP,   0)  /* (A25) MMC0_DAT3 */
+			AM65X_IOPAD(0x0194, PIN_INPUT_PULLUP,   0)  /* (E24) MMC0_DAT4 */
+			AM65X_IOPAD(0x0190, PIN_INPUT_PULLUP,   0)  /* (A24) MMC0_DAT5 */
+			AM65X_IOPAD(0x018c, PIN_INPUT_PULLUP,   0)  /* (B26) MMC0_DAT6 */
+			AM65X_IOPAD(0x0188, PIN_INPUT_PULLUP,   0)  /* (D25) MMC0_DAT7 */
+			AM65X_IOPAD(0x01b8, PIN_OUTPUT_PULLUP,  7)  /* (B23) MMC0_SDWP */
+			AM65X_IOPAD(0x01b4, PIN_INPUT_PULLUP,   0)  /* (A23) MMC0_SDCD */
+			AM65X_IOPAD(0x01b0, PIN_INPUT,          0)  /* (C25) MMC0_DS */
+		>;
+	};
+};
+
+/* eMMC */
+&sdhci0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_mmc0_pins_default>;
+	bus-width = <8>;
+	non-removable;
+	ti,driver-strength-ohm = <50>;
+	disable-wp;
+};
+
+&main_uart0 {
+	status = "disabled";
+};
diff --git a/arch/arm64/boot/dts/ti/k3-am6548-iot2050-advanced.dts b/arch/arm64/boot/dts/ti/k3-am6548-iot2050-advanced.dts
index ec9617c13cdb..077f165bdc68 100644
--- a/arch/arm64/boot/dts/ti/k3-am6548-iot2050-advanced.dts
+++ b/arch/arm64/boot/dts/ti/k3-am6548-iot2050-advanced.dts
@@ -4,57 +4,21 @@
  *
  * Authors:
  *   Le Jin <le.jin@siemens.com>
- *   Jan Kiszka <jan.kiszk@siemens.com>
+ *   Jan Kiszka <jan.kiszka@siemens.com>
  *
- * AM6548-based (quad-core) IOT2050 Advanced variant
+ * AM6548-based (quad-core) IOT2050 Advanced variant, Product Generation 1
  * 2 GB RAM, 16 GB eMMC, USB-serial converter on connector X30
+ *
+ * Product homepage:
+ * https://new.siemens.com/global/en/products/automation/pc-based/iot-gateways/simatic-iot2050.html
  */
 
 /dts-v1/;
 
-#include "k3-am65-iot2050-common.dtsi"
+#include "k3-am6548-iot2050-advanced-common.dtsi"
+#include "k3-am65-iot2050-common-pg1.dtsi"
 
 / {
 	compatible = "siemens,iot2050-advanced", "ti,am654";
 	model = "SIMATIC IOT2050 Advanced";
-
-	memory@80000000 {
-		device_type = "memory";
-		/* 2G RAM */
-		reg = <0x00000000 0x80000000 0x00000000 0x80000000>;
-	};
-};
-
-&main_pmx0 {
-	main_mmc0_pins_default: main-mmc0-pins-default {
-		pinctrl-single,pins = <
-			AM65X_IOPAD(0x01a8, PIN_INPUT_PULLDOWN, 0)  /* (B25) MMC0_CLK */
-			AM65X_IOPAD(0x01ac, PIN_INPUT_PULLUP,   0)  /* (B27) MMC0_CMD */
-			AM65X_IOPAD(0x01a4, PIN_INPUT_PULLUP,   0)  /* (A26) MMC0_DAT0 */
-			AM65X_IOPAD(0x01a0, PIN_INPUT_PULLUP,   0)  /* (E25) MMC0_DAT1 */
-			AM65X_IOPAD(0x019c, PIN_INPUT_PULLUP,   0)  /* (C26) MMC0_DAT2 */
-			AM65X_IOPAD(0x0198, PIN_INPUT_PULLUP,   0)  /* (A25) MMC0_DAT3 */
-			AM65X_IOPAD(0x0194, PIN_INPUT_PULLUP,   0)  /* (E24) MMC0_DAT4 */
-			AM65X_IOPAD(0x0190, PIN_INPUT_PULLUP,   0)  /* (A24) MMC0_DAT5 */
-			AM65X_IOPAD(0x018c, PIN_INPUT_PULLUP,   0)  /* (B26) MMC0_DAT6 */
-			AM65X_IOPAD(0x0188, PIN_INPUT_PULLUP,   0)  /* (D25) MMC0_DAT7 */
-			AM65X_IOPAD(0x01b8, PIN_OUTPUT_PULLUP,  7)  /* (B23) MMC0_SDWP */
-			AM65X_IOPAD(0x01b4, PIN_INPUT_PULLUP,   0)  /* (A23) MMC0_SDCD */
-			AM65X_IOPAD(0x01b0, PIN_INPUT,          0)  /* (C25) MMC0_DS */
-		>;
-	};
-};
-
-/* eMMC */
-&sdhci0 {
-	pinctrl-names = "default";
-	pinctrl-0 = <&main_mmc0_pins_default>;
-	bus-width = <8>;
-	non-removable;
-	ti,driver-strength-ohm = <50>;
-	disable-wp;
-};
-
-&main_uart0 {
-	status = "disabled";
 };