[U-Boot] [PATCH v2 13/13] board: Add gpio and ethernet support to pic32mzdask board.

[Purna Chandra Mandal]

Signed-off-by: Purna Chandra Mandal <purna.mandal at microchip.com>

---

Changes in v2:
- replace unbounded loop with wait_for_bit()
- replace register access as readl/writel(base + offset)
- translate (dts provided) physical address to MIPS kseg1 address before use

 arch/mips/dts/pic32mzda.dtsi   | 93 ++++++++++++++++++++++++++++++++++++++++++
 arch/mips/dts/pic32mzda_sk.dts |  5 +++
 configs/pic32mzdask_defconfig  | 11 ++++-
 include/configs/pic32mzdask.h  | 30 +++++++++++++-
 4 files changed, 136 insertions(+), 3 deletions(-)

diff --git a/arch/mips/dts/pic32mzda.dtsi b/arch/mips/dts/pic32mzda.dtsi
index bdddb93..a354037 100644
--- a/arch/mips/dts/pic32mzda.dtsi
+++ b/arch/mips/dts/pic32mzda.dtsi
@@ -5,6 +5,7 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
+#include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/clock/microchip,clock.h>
 #include "skeleton.dtsi"
@@ -12,6 +13,19 @@
 / {
 	compatible = "microchip,pic32mzda", "microchip,pic32mz";
 
+	aliases {
+		gpio0 = &gpioA;
+		gpio1 = &gpioB;
+		gpio2 = &gpioC;
+		gpio3 = &gpioD;
+		gpio4 = &gpioE;
+		gpio5 = &gpioF;
+		gpio6 = &gpioG;
+		gpio7 = &gpioH;
+		gpio8 = &gpioJ;
+		gpio9 = &gpioK;
+	};
+
 	cpus {
 		cpu at 0 {
 			compatible = "mips,mips14kc";
@@ -62,6 +76,76 @@
 		status = "disabled";
 	};
 
+	gpioA: gpio0 at 1f860000 {
+		compatible = "microchip,pic32mzda-gpio";
+		reg = <0x1f860000 0x24>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpioB: gpio1 at 1f860100 {
+		compatible = "microchip,pic32mzda-gpio";
+		reg = <0x1f860100 0x24>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpioC: gpio2 at 1f860200 {
+		compatible = "microchip,pic32mzda-gpio";
+		reg = <0x1f860200 0x24>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpioD: gpio3 at 1f860300 {
+		compatible = "microchip,pic32mzda-gpio";
+		reg = <0x1f860300 0x24>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpioE: gpio4 at 1f860400 {
+		compatible = "microchip,pic32mzda-gpio";
+		reg = <0x1f860400 0x24>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpioF: gpio5 at 1f860500 {
+		compatible = "microchip,pic32mzda-gpio";
+		reg = <0x1f860500 0x24>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpioG: gpio6 at 1f860600 {
+		compatible = "microchip,pic32mzda-gpio";
+		reg = <0x1f860600 0x24>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpioH: gpio7 at 1f860700 {
+		compatible = "microchip,pic32mzda-gpio";
+		reg = <0x1f860700 0x24>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpioJ: gpio8 at 1f860800 {
+		compatible = "microchip,pic32mzda-gpio";
+		reg = <0x1f860800 0x24>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	gpioK: gpio9 at 1f860900 {
+		compatible = "microchip,pic32mzda-gpio";
+		reg = <0x1f860900 0x24>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
 	sdhci: sdhci at 1f8ec000 {
 		compatible = "microchip,pic32mzda-sdhci";
 		reg = <0x1f8ec000 0x100>;
@@ -74,4 +158,13 @@
 		clock-irq-pins = <1>,<1>;
 		status = "disabled";
 	};
+
+	ethernet: ethernet at 1f882000 {
+		compatible = "microchip,pic32mzda-eth";
+		reg = <0x1f882000 0x1000>;
+		interrupts = <153 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&clock PB5CLK>;
+		phy-mode = "rmii";
+		status = "disabled";
+	};
 };
diff --git a/arch/mips/dts/pic32mzda_sk.dts b/arch/mips/dts/pic32mzda_sk.dts
index f886a0f..fb69a4c 100644
--- a/arch/mips/dts/pic32mzda_sk.dts
+++ b/arch/mips/dts/pic32mzda_sk.dts
@@ -42,4 +42,9 @@
 
 &sdhci {
 	status = "okay";
+};
+
+&ethernet {
+	reset-gpios = <&gpioJ 15 0>;
+	status = "okay";
 };
\ No newline at end of file
diff --git a/configs/pic32mzdask_defconfig b/configs/pic32mzdask_defconfig
index d11eddd..6b20e68 100644
--- a/configs/pic32mzdask_defconfig
+++ b/configs/pic32mzdask_defconfig
@@ -6,6 +6,7 @@ CONFIG_SYS_LITTLE_ENDIAN=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="dask # "
+CONFIG_CMD_NET=y
 CONFIG_CMD_TIME=y
 # CONFIG_CMD_IMLS is not set
 CONFIG_SUPPORT_OF_CONTROL=y
@@ -20,4 +21,12 @@ CONFIG_PINCTRL=y
 # CONFIG_PINCTRL_FULL is not set
 CONFIG_PIC32_PINCTRL=y
 CONFIG_DM_MMC=y
-CONFIG_PIC32_SDHCI=y
\ No newline at end of file
+CONFIG_PIC32_SDHCI=y
+CONFIG_DM_GPIO=y
+CONFIG_CMD_GPIO=y
+CONFIG_PIC32_GPIO=y
+CONFIG_NET=y
+CONFIG_DM_ETH=y
+CONFIG_PHYLIB=y
+CONFIG_NETDEVICES=y
+CONFIG_PIC32_ETH=y
\ No newline at end of file
diff --git a/include/configs/pic32mzdask.h b/include/configs/pic32mzdask.h
index 52e53e9..d08f6ad 100644
--- a/include/configs/pic32mzdask.h
+++ b/include/configs/pic32mzdask.h
@@ -79,6 +79,28 @@
 		(CONFIG_SYS_CBSIZE + sizeof(CONFIG_SYS_PROMPT) + 16)
 #define CONFIG_CMDLINE_EDITING		1
 
+/*-----------------------------------------------------------------------
+ * Networking Configuration
+ */
+#define CONFIG_MII
+#define CONFIG_PHY_SMSC
+#define CONFIG_PHY_ADDR			0 /* LAN87XX */
+#define CONFIG_SYS_RX_ETH_BUFFER	8
+#define CONFIG_NET_RETRY_COUNT		20
+#define CONFIG_ARP_TIMEOUT		500 /* millisec */
+
+#define CONFIG_CMD_MII
+#define CONFIG_CMD_PING
+#define CONFIG_CMD_DHCP
+
+/*
+ * BOOTP options
+ */
+#define CONFIG_BOOTP_BOOTFILESIZE
+#define CONFIG_BOOTP_BOOTPATH
+#define CONFIG_BOOTP_GATEWAY
+#define CONFIG_BOOTP_HOSTNAME
+
 /*
  * Handover flattened device tree (dtb file) to Linux kernel
  */
@@ -133,12 +155,16 @@
 	"importbootenv= "					\
 		"env import -t -r ${uenvaddr} ${filesize};\0"	\
 								\
+	"tftploadenv=tftp ${uenvaddr} ${uenvfile} \0"		\
+	"tftploadscr=tftp ${uenvaddr} ${scriptfile} \0"		\
+	"tftploadub=tftp ${loadaddr} ${ubootfile} \0"		\
+								\
 	"mmcloadenv=fatload mmc 0 ${uenvaddr} ${uenvfile}\0"	\
 	"mmcloadscr=fatload mmc 0 ${uenvaddr} ${scriptfile}\0"	\
 	"mmcloadub=fatload mmc 0 ${loadaddr} ${ubootfile}\0"	\
 								\
-	"loadbootenv=run mmcloadenv\0"				\
-	"loadbootscr=run mmcloadscr\0"				\
+	"loadbootenv=run mmcloadenv || run tftploadenv\0"	\
+	"loadbootscr=run mmcloadscr || run tftploadscr\0"	\
 	"bootcmd_root= "					\
 		"if run loadbootenv; then "			\
 			"echo Loaded environment ${uenvfile}; "	\
-- 
1.8.3.1