MIPS: ralink: adds support for MT7620 SoC family

Add support code for mt7620 SOC.

The code detects the SoC and registers the clk / pinmux settings.

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5177/

1 files changed, 76 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-ralink/mt7620.h b/arch/mips/include/asm/mach-ralink/mt7620.h
new file mode 100644
index 0000000..b272649
--- /dev/null
+++ b/arch/mips/include/asm/mach-ralink/mt7620.h
@@ -0,0 +1,76 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Parts of this file are based on Ralink's 2.6.21 BSP
+ *
+ * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ */
+
+#ifndef _MT7620_REGS_H_
+#define _MT7620_REGS_H_
+
+#define MT7620_SYSC_BASE		0x10000000
+
+#define SYSC_REG_CHIP_NAME0		0x00
+#define SYSC_REG_CHIP_NAME1		0x04
+#define SYSC_REG_CHIP_REV		0x0c
+#define SYSC_REG_SYSTEM_CONFIG0		0x10
+#define SYSC_REG_SYSTEM_CONFIG1		0x14
+#define SYSC_REG_CPLL_CONFIG0		0x54
+#define SYSC_REG_CPLL_CONFIG1		0x58
+
+#define MT7620N_CHIP_NAME0		0x33365452
+#define MT7620N_CHIP_NAME1		0x20203235
+
+#define MT7620A_CHIP_NAME0		0x3637544d
+#define MT7620A_CHIP_NAME1		0x20203032
+
+#define CHIP_REV_PKG_MASK		0x1
+#define CHIP_REV_PKG_SHIFT		16
+#define CHIP_REV_VER_MASK		0xf
+#define CHIP_REV_VER_SHIFT		8
+#define CHIP_REV_ECO_MASK		0xf
+
+#define CPLL_SW_CONFIG_SHIFT		31
+#define CPLL_SW_CONFIG_MASK		0x1
+#define CPLL_CPU_CLK_SHIFT		24
+#define CPLL_CPU_CLK_MASK		0x1
+#define CPLL_MULT_RATIO_SHIFT           16
+#define CPLL_MULT_RATIO                 0x7
+#define CPLL_DIV_RATIO_SHIFT            10
+#define CPLL_DIV_RATIO                  0x3
+
+#define SYSCFG0_DRAM_TYPE_MASK		0x3
+#define SYSCFG0_DRAM_TYPE_SHIFT		4
+#define SYSCFG0_DRAM_TYPE_SDRAM		0
+#define SYSCFG0_DRAM_TYPE_DDR1		1
+#define SYSCFG0_DRAM_TYPE_DDR2		2
+
+#define MT7620_GPIO_MODE_I2C		BIT(0)
+#define MT7620_GPIO_MODE_UART0_SHIFT	2
+#define MT7620_GPIO_MODE_UART0_MASK	0x7
+#define MT7620_GPIO_MODE_UART0(x)	((x) << MT7620_GPIO_MODE_UART0_SHIFT)
+#define MT7620_GPIO_MODE_UARTF		0x0
+#define MT7620_GPIO_MODE_PCM_UARTF	0x1
+#define MT7620_GPIO_MODE_PCM_I2S	0x2
+#define MT7620_GPIO_MODE_I2S_UARTF	0x3
+#define MT7620_GPIO_MODE_PCM_GPIO	0x4
+#define MT7620_GPIO_MODE_GPIO_UARTF	0x5
+#define MT7620_GPIO_MODE_GPIO_I2S	0x6
+#define MT7620_GPIO_MODE_GPIO		0x7
+#define MT7620_GPIO_MODE_UART1		BIT(5)
+#define MT7620_GPIO_MODE_MDIO		BIT(8)
+#define MT7620_GPIO_MODE_RGMII1		BIT(9)
+#define MT7620_GPIO_MODE_RGMII2		BIT(10)
+#define MT7620_GPIO_MODE_SPI		BIT(11)
+#define MT7620_GPIO_MODE_SPI_REF_CLK	BIT(12)
+#define MT7620_GPIO_MODE_WLED		BIT(13)
+#define MT7620_GPIO_MODE_JTAG		BIT(15)
+#define MT7620_GPIO_MODE_EPHY		BIT(15)
+#define MT7620_GPIO_MODE_WDT		BIT(22)
+
+#endif