[U-Boot] [PATCH v6 11/14] MIPS: add support for Broadcom MIPS BCM6328 SoC family

[Álvaro Fernández Rojas]

Signed-off-by: Álvaro Fernández Rojas <noltari at gmail.com>
---
 v6: Several improvements:
  - Rename reset_cntl syscon to pll_cntl.
  - Reorder include config defines.
 v5: No changes.
 v4: No changes.
 v3: No changes.
 v2: Introduce changes suggested by Daniel Schwierzeck:
  - Split BMIPS support patches.
  - Add PERF_BASE to cpus.

 arch/mips/dts/brcm,bcm6328.dtsi | 88 +++++++++++++++++++++++++++++++++++++++++
 arch/mips/mach-bmips/Kconfig    | 12 ++++++
 include/configs/bmips_bcm6328.h | 25 ++++++++++++
 3 files changed, 125 insertions(+)
 create mode 100644 arch/mips/dts/brcm,bcm6328.dtsi
 create mode 100644 include/configs/bmips_bcm6328.h

diff --git a/arch/mips/dts/brcm,bcm6328.dtsi b/arch/mips/dts/brcm,bcm6328.dtsi
new file mode 100644
index 0000000..b287239
--- /dev/null
+++ b/arch/mips/dts/brcm,bcm6328.dtsi
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2017 Álvaro Fernández Rojas <noltari at gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include "skeleton.dtsi"
+
+/ {
+	compatible = "brcm,bcm6328";
+
+	cpus {
+		reg = <0x10000000 0x4>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		u-boot,dm-pre-reloc;
+
+		cpu at 0 {
+			compatible = "brcm,bcm6328-cpu", "mips,mips4Kc";
+			device_type = "cpu";
+			reg = <0>;
+			u-boot,dm-pre-reloc;
+		};
+
+		cpu at 1 {
+			compatible = "brcm,bcm6328-cpu", "mips,mips4Kc";
+			device_type = "cpu";
+			reg = <1>;
+			u-boot,dm-pre-reloc;
+		};
+	};
+
+	clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		u-boot,dm-pre-reloc;
+
+		periph_osc: periph-osc {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <50000000>;
+			u-boot,dm-pre-reloc;
+		};
+	};
+
+	ubus {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		u-boot,dm-pre-reloc;
+
+		pll_cntl: syscon at 10000068 {
+			compatible = "syscon";
+			reg = <0x10000068 0x4>;
+		};
+
+		syscon-reboot {
+			compatible = "syscon-reboot";
+			regmap = <&pll_cntl>;
+			offset = <0x0>;
+			mask = <0x1>;
+		};
+
+		uart0: serial at 10000100 {
+			compatible = "brcm,bcm6345-uart";
+			reg = <0x10000100 0x18>;
+			clocks = <&periph_osc>;
+
+			status = "disabled";
+		};
+
+		uart1: serial at 10000120 {
+			compatible = "brcm,bcm6345-uart";
+			reg = <0x10000120 0x18>;
+			clocks = <&periph_osc>;
+
+			status = "disabled";
+		};
+
+		memory-controller at 10003000 {
+			compatible = "brcm,bcm6328-mc";
+			reg = <0x10003000 0x1000>;
+			u-boot,dm-pre-reloc;
+		};
+	};
+};
diff --git a/arch/mips/mach-bmips/Kconfig b/arch/mips/mach-bmips/Kconfig
index 0300ae3..467ba5b 100644
--- a/arch/mips/mach-bmips/Kconfig
+++ b/arch/mips/mach-bmips/Kconfig
@@ -2,11 +2,23 @@ menu "Broadcom MIPS platforms"
 	depends on ARCH_BMIPS
 
 config SYS_SOC
+	default "bcm6328" if SOC_BMIPS_BCM6328
 	default "bcm6358" if SOC_BMIPS_BCM6358
 
 choice
 	prompt "Broadcom MIPS SoC select"
 
+config SOC_BMIPS_BCM6328
+	bool "BMIPS BCM6328 family"
+	select SUPPORTS_BIG_ENDIAN
+	select SUPPORTS_CPU_MIPS32_R1
+	select MIPS_TUNE_4KC
+	select MIPS_L1_CACHE_SHIFT_4
+	select SWAP_IO_SPACE
+	select SYSRESET_SYSCON
+	help
+	  This supports BMIPS BCM6328 family including BCM63281 and BCM63283.
+
 config SOC_BMIPS_BCM6358
 	bool "BMIPS BCM6358 family"
 	select SUPPORTS_BIG_ENDIAN
diff --git a/include/configs/bmips_bcm6328.h b/include/configs/bmips_bcm6328.h
new file mode 100644
index 0000000..41c7838
--- /dev/null
+++ b/include/configs/bmips_bcm6328.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2017 Álvaro Fernández Rojas <noltari at gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __CONFIG_BMIPS_BCM6328_H
+#define __CONFIG_BMIPS_BCM6328_H
+
+/* CPU */
+#define CONFIG_SYS_MIPS_TIMER_FREQ	160000000
+
+/* RAM */
+#define CONFIG_NR_DRAM_BANKS		1
+#define CONFIG_SYS_SDRAM_BASE		0x80000000
+
+/* U-Boot */
+#define CONFIG_SYS_LOAD_ADDR		CONFIG_SYS_SDRAM_BASE + 0x100000
+
+#if defined(CONFIG_BMIPS_BOOT_RAM)
+#define CONFIG_SKIP_LOWLEVEL_INIT
+#define CONFIG_SYS_INIT_SP_OFFSET	0x2000
+#endif
+
+#endif /* __CONFIG_BMIPS_BCM6328_H */
-- 
2.1.4