[PATCH V7 14/15] arm: dts: iot2050: Add support for M.2 variant
Jan Kiszka
jan.kiszka at siemens.com
Tue Feb 28 19:19:22 CET 2023
From: chao zeng <chao.zeng at siemens.com>
Add support for the M.2 board based on the iot2050 advanced board.
The board has two m.2 connectors, one is B-keyed, the other E-keyed.
The B-key slot can connect 5G/SSD devices, and E-key can be used for
WIFI/BT devices.
This variant is covered by PG2 firmware image.
Signed-off-by: chao zeng <chao.zeng at siemens.com>
[Jan: align DT to kernel, polish wording]
Signed-off-by: Jan Kiszka <jan.kiszka at siemens.com>
---
arch/arm/dts/Makefile | 3 +-
.../arm/dts/k3-am6548-iot2050-advanced-m2.dts | 121 ++++++++++++++++++
configs/iot2050_pg2_defconfig | 2 +-
doc/board/siemens/iot2050.rst | 6 +-
4 files changed, 128 insertions(+), 4 deletions(-)
create mode 100644 arch/arm/dts/k3-am6548-iot2050-advanced-m2.dts
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 7a577deb502..8e9e2bf9a42 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1253,7 +1253,8 @@ dtb-$(CONFIG_SOC_K3_AM654) += \
k3-am6528-iot2050-basic.dtb \
k3-am6528-iot2050-basic-pg2.dtb \
k3-am6548-iot2050-advanced.dtb \
- k3-am6548-iot2050-advanced-pg2.dtb
+ k3-am6548-iot2050-advanced-pg2.dtb \
+ k3-am6548-iot2050-advanced-m2.dtb
dtb-$(CONFIG_SOC_K3_J721E) += k3-j721e-common-proc-board.dtb \
k3-j721e-r5-common-proc-board.dtb \
k3-j7200-common-proc-board.dtb \
diff --git a/arch/arm/dts/k3-am6548-iot2050-advanced-m2.dts b/arch/arm/dts/k3-am6548-iot2050-advanced-m2.dts
new file mode 100644
index 00000000000..9400e35882a
--- /dev/null
+++ b/arch/arm/dts/k3-am6548-iot2050-advanced-m2.dts
@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) Siemens AG, 2018-2023
+ *
+ * Authors:
+ * Chao Zeng <chao.zeng at siemens.com>
+ * Jan Kiszka <jan.kiszka at siemens.com>
+ *
+ * AM6548-based (quad-core) IOT2050 M.2 variant (based on Advanced Product
+ * Generation 2), 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
+ */
+
+#include "k3-am6548-iot2050-advanced-common.dtsi"
+#include "k3-am65-iot2050-common-pg2.dtsi"
+
+/ {
+ compatible = "siemens,iot2050-advanced-m2", "ti,am654";
+ model = "SIMATIC IOT2050 Advanced M2";
+};
+
+&mcu_r5fss0 {
+ /* lock-step mode not supported on this board */
+ ti,cluster-mode = <0>;
+};
+
+&main_pmx0 {
+ main_m2_enable_pins_default: main-m2-enable-pins-default {
+ pinctrl-single,pins = <
+ AM65X_IOPAD(0x01c4, PIN_INPUT_PULLUP, 7) /* (AH13) GPIO1_17 */
+ >;
+ };
+
+ main_bkey_pcie_reset: main-bkey-pcie-reset {
+ pinctrl-single,pins = <
+ AM65X_IOPAD(0x01bc, PIN_OUTPUT_PULLUP, 7) /* (AG13) GPIO1_15 */
+ >;
+ };
+
+ main_pmx0_m2_config_pins_default: main-pmx0-m2-config-pins-default {
+ pinctrl-single,pins = <
+ AM65X_IOPAD(0x01c8, PIN_INPUT_PULLUP, 7) /* (AE13) GPIO1_18 */
+ AM65X_IOPAD(0x01cc, PIN_INPUT_PULLUP, 7) /* (AD13) GPIO1_19 */
+ >;
+ };
+
+ main_m2_pcie_mux_control: main-m2-pcie-mux-control {
+ pinctrl-single,pins = <
+ AM65X_IOPAD(0x0148, PIN_INPUT_PULLUP, 7) /* (AG22) GPIO0_82 */
+ AM65X_IOPAD(0x0160, PIN_INPUT_PULLUP, 7) /* (AE20) GPIO0_88 */
+ AM65X_IOPAD(0x0164, PIN_INPUT_PULLUP, 7) /* (AF19) GPIO0_89 */
+ >;
+ };
+};
+
+&main_pmx1 {
+ main_pmx1_m2_config_pins_default: main-pmx1-m2-config-pins-default {
+ pinctrl-single,pins = <
+ AM65X_IOPAD(0x0018, PIN_INPUT_PULLUP, 7) /* (B22) GPIO1_88 */
+ AM65X_IOPAD(0x001c, PIN_INPUT_PULLUP, 7) /* (C23) GPIO1_89 */
+ >;
+ };
+};
+
+&main_gpio0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <
+ &main_m2_pcie_mux_control
+ &arduino_io_d4_to_d9_pins_default
+ >;
+};
+
+&main_gpio1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <
+ &main_m2_enable_pins_default
+ &main_pmx0_m2_config_pins_default
+ &main_pmx1_m2_config_pins_default
+ &cp2102n_reset_pin_default
+ >;
+};
+
+/*
+ * Base configuration for B-key slot with PCIe x2, E-key with USB 2.0 only.
+ * Firmware switches to other modes via device tree overlays.
+ */
+
+&serdes0 {
+ assigned-clocks = <&k3_clks 153 4>, <&serdes0 AM654_SERDES_CMU_REFCLK>;
+ assigned-clock-parents = <&k3_clks 153 8>, <&k3_clks 153 4>;
+};
+
+&pcie0_rc {
+ pinctrl-names = "default";
+ pinctrl-0 = <&main_bkey_pcie_reset>;
+
+ num-lanes = <2>;
+ phys = <&serdes0 PHY_TYPE_PCIE 1>, <&serdes1 PHY_TYPE_PCIE 1>;
+ phy-names = "pcie-phy0","pcie-phy1";
+ reset-gpios = <&main_gpio1 15 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+};
+
+&pcie1_rc {
+ status = "disabled";
+};
+
+&dwc3_0 {
+ assigned-clock-parents = <&k3_clks 151 4>, /* set REF_CLK to 20MHz i.e. PER0_PLL/48 */
+ <&k3_clks 151 9>; /* set PIPE3_TXB_CLK to CLK_12M_RC/256 (for HS only) */
+ /delete-property/ phys;
+ /delete-property/ phy-names;
+};
+
+&usb0 {
+ maximum-speed = "high-speed";
+ /delete-property/ snps,dis-u1-entry-quirk;
+ /delete-property/ snps,dis-u2-entry-quirk;
+};
diff --git a/configs/iot2050_pg2_defconfig b/configs/iot2050_pg2_defconfig
index d2bdeab593b..b20667780a3 100644
--- a/configs/iot2050_pg2_defconfig
+++ b/configs/iot2050_pg2_defconfig
@@ -69,7 +69,7 @@ CONFIG_CMD_TIME=y
# CONFIG_ISO_PARTITION is not set
CONFIG_OF_CONTROL=y
CONFIG_SPL_OF_CONTROL=y
-CONFIG_OF_LIST="k3-am6528-iot2050-basic-pg2 k3-am6548-iot2050-advanced-pg2"
+CONFIG_OF_LIST="k3-am6528-iot2050-basic-pg2 k3-am6548-iot2050-advanced-pg2 k3-am6548-iot2050-advanced-m2"
CONFIG_SPL_MULTI_DTB_FIT=y
CONFIG_SPL_OF_LIST="k3-am65-iot2050-spl"
CONFIG_SPL_MULTI_DTB_FIT_NO_COMPRESSION=y
diff --git a/doc/board/siemens/iot2050.rst b/doc/board/siemens/iot2050.rst
index efe94a448a9..442d2cac216 100644
--- a/doc/board/siemens/iot2050.rst
+++ b/doc/board/siemens/iot2050.rst
@@ -6,7 +6,9 @@ SIMATIC IOT2050 BASIC and ADVANCED
The SIMATIC IOT2050 is an open industrial IoT gateway that is using the TI
AM6528 GP (Basic variant) or the AM6548 HS (Advanced variant). The Advanced
-variant is prepared for secure boot.
+variant is prepared for secure boot. M.2 Variant also uses the AM6548 HS.
+Instead of a MiniPCI connector, it comes with two M.2 connectors and can
+support 5G/WIFI/BT applications or connect an SSD.
The IOT2050 starts only from OSPI. It loads a Siemens-provided bootloader
called SE-Boot for the MCU domain (R5F cores), then hands over to ATF and
@@ -70,7 +72,7 @@ U-Boot:
# configure for PG1
$ make iot2050_pg1_defconfig
- # or configure for PG2
+ # or configure for PG2 or the M.2 variant
$ make iot2050_pg2_defconfig
$ make
--
2.35.3
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