ar71xx: add initial support for the AR934x SoCs

Signed-off-by: Jaiganesh Narayanan <jnarayanan@atheros.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26509 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/setup.c b/target/linux/ar71xx/files/arch/mips/ar71xx/setup.c
index 658fdd0..37ce27d 100644 (file)
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/setup.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/setup.c
@@ -1,10 +1,12 @@
 /*
  *  Atheros AR71xx SoC specific setup
  *
+ *  Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com>
  *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
  *
- *  Parts of this file are based on Atheros' 2.6.15 BSP
+ *  Parts of this file are based on Atheros 2.6.15 BSP
+ *  Parts of this file are based on Atheros 2.6.31 BSP
  *
  *  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
@@ -39,6 +41,9 @@ EXPORT_SYMBOL_GPL(ar71xx_ahb_freq);
 u32 ar71xx_ddr_freq;
 EXPORT_SYMBOL_GPL(ar71xx_ddr_freq);
 
+u32 ar934x_ref_freq;
+EXPORT_SYMBOL_GPL(ar934x_ref_freq);
+
 enum ar71xx_soc_type ar71xx_soc;
 EXPORT_SYMBOL_GPL(ar71xx_soc);
 
@@ -141,6 +146,27 @@ static void __init ar71xx_detect_sys_type(void)
                }
                break;
 
+       case REV_ID_MAJOR_AR9341:
+               ar71xx_soc = AR71XX_SOC_AR9341;
+               chip = "9341";
+               rev = ar71xx_reset_rr(AR71XX_RESET_REG_REV_ID) &
+                       AR934X_REV_ID_REVISION_MASK;
+               break;
+
+       case REV_ID_MAJOR_AR9342:
+               ar71xx_soc = AR71XX_SOC_AR9342;
+               chip = "9342";
+               rev = ar71xx_reset_rr(AR71XX_RESET_REG_REV_ID) &
+                       AR934X_REV_ID_REVISION_MASK;
+               break;
+
+       case REV_ID_MAJOR_AR9344:
+               ar71xx_soc = AR71XX_SOC_AR9344;
+               chip = "9344";
+               rev = ar71xx_reset_rr(AR71XX_RESET_REG_REV_ID) &
+                       AR934X_REV_ID_REVISION_MASK;
+               break;
+
        default:
                panic("ar71xx: unknown chip id:0x%08x\n", id);
        }
@@ -148,6 +174,44 @@ static void __init ar71xx_detect_sys_type(void)
        sprintf(ar71xx_sys_type, "Atheros AR%s rev %u", chip, rev);
 }
 
+static void __init ar934x_detect_sys_frequency(void)
+{
+       u32 pll, out_div, ref_div, nint, frac, clk_ctrl, ref, postdiv;
+
+       if (ar71xx_reset_rr(AR934X_RESET_REG_BOOTSTRAP) & AR934X_REF_CLK_40)
+               ref = (40 * 1000000);
+       else
+               ref = (25 * 1000000);
+
+       ar934x_ref_freq = ref;
+
+       clk_ctrl = ar71xx_pll_rr(AR934X_PLL_REG_DDR_CTRL_CLOCK);
+
+       pll = ar71xx_pll_rr(AR934X_PLL_REG_CPU_CONFIG);
+       out_div = AR934X_CPU_PLL_CFG_OUTDIV_GET(pll);
+       ref_div = AR934X_CPU_PLL_CFG_REFDIV_GET(pll);
+       nint    = AR934X_CPU_PLL_CFG_NINT_GET(pll);
+       frac    = AR934X_CPU_PLL_CFG_NFRAC_GET(pll);
+       postdiv = AR934X_CPU_DDR_CLK_CTRL_CPU_POST_DIV_GET(clk_ctrl);
+       ar71xx_cpu_freq = ((nint * ref / ref_div) >> out_div) / (postdiv + 1);
+
+       out_div = AR934X_DDR_PLL_CFG_OUTDIV_GET(pll);
+       ref_div = AR934X_DDR_PLL_CFG_REFDIV_GET(pll);
+       nint    = AR934X_DDR_PLL_CFG_NINT_GET(pll);
+       frac    = AR934X_DDR_PLL_CFG_NFRAC_GET(pll);
+       postdiv = AR934X_CPU_DDR_CLK_CTRL_DDR_POST_DIV_GET(clk_ctrl);
+       ar71xx_ddr_freq = ((nint * ref / ref_div) >> out_div) / (postdiv + 1);
+
+       postdiv = AR934X_CPU_DDR_CLK_CTRL_AHB_POST_DIV_GET(clk_ctrl);
+
+       if (AR934X_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL_GET(clk_ctrl)) {
+               ar71xx_ahb_freq = ar71xx_ddr_freq / (postdiv + 1);
+       } else {
+               ar71xx_ahb_freq = ar71xx_cpu_freq / (postdiv + 1);
+       }
+
+}
+
 static void __init ar91xx_detect_sys_frequency(void)
 {
        u32 pll;
@@ -232,6 +296,11 @@ static void __init detect_sys_frequency(void)
                ar91xx_detect_sys_frequency();
                break;
 
+       case AR71XX_SOC_AR9341:
+       case AR71XX_SOC_AR9342:
+       case AR71XX_SOC_AR9344:
+               ar934x_detect_sys_frequency();
+               break;
        default:
                BUG();
        }

diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
index ce9523d..0a31678 100644 (file)
--- a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
+++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
@@ -1,10 +1,12 @@
 /*
  *  Atheros AR71xx SoC specific definitions
  *
+ *  Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com>
  *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
  *
- *  Parts of this file are based on Atheros' 2.6.15 BSP
+ *  Parts of this file are based on Atheros 2.6.15 BSP
+ *  Parts of this file are based on Atheros 2.6.31 BSP
  *
  *  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
@@ -105,6 +107,7 @@
 extern u32 ar71xx_ahb_freq;
 extern u32 ar71xx_cpu_freq;
 extern u32 ar71xx_ddr_freq;
+extern u32 ar934x_ref_freq;
 
 enum ar71xx_soc_type {
        AR71XX_SOC_UNKNOWN,
@@ -115,7 +118,10 @@ enum ar71xx_soc_type {
        AR71XX_SOC_AR7241,
        AR71XX_SOC_AR7242,
        AR71XX_SOC_AR9130,
-       AR71XX_SOC_AR9132
+       AR71XX_SOC_AR9132,
+       AR71XX_SOC_AR9341,
+       AR71XX_SOC_AR9342,
+       AR71XX_SOC_AR9344,
 };
 
 extern enum ar71xx_soc_type ar71xx_soc;
@@ -167,6 +173,167 @@ extern enum ar71xx_soc_type ar71xx_soc;
 #define AR91XX_ETH0_PLL_SHIFT          20
 #define AR91XX_ETH1_PLL_SHIFT          22
 
+#define AR934X_PLL_REG_CPU_CONFIG      0x00
+#define AR934X_PLL_REG_DDR_CTRL_CLOCK  0x8
+
+#define AR934X_CPU_PLL_CFG_OUTDIV_MSB  21
+#define AR934X_CPU_PLL_CFG_OUTDIV_LSB  19
+#define AR934X_CPU_PLL_CFG_OUTDIV_MASK 0x00380000
+
+#define AR934X_CPU_PLL_CFG_OUTDIV_GET(x)               \
+       (((x) & AR934X_CPU_PLL_CFG_OUTDIV_MASK) >>      \
+       AR934X_CPU_PLL_CFG_OUTDIV_LSB)
+
+#define AR934X_DDR_PLL_CFG_OUTDIV_MSB  25
+#define AR934X_DDR_PLL_CFG_OUTDIV_LSB  23
+#define AR934X_DDR_PLL_CFG_OUTDIV_MASK 0x03800000
+
+#define AR934X_DDR_PLL_CFG_OUTDIV_GET(x)               \
+       (((x) & AR934X_DDR_PLL_CFG_OUTDIV_MASK) >>      \
+       AR934X_DDR_PLL_CFG_OUTDIV_LSB)
+
+#define AR934X_DDR_PLL_CFG_OUTDIV_SET(x)               \
+       (((x) << AR934X_DDR_PLL_CFG_OUTDIV_LSB) &       \
+       AR934X_DDR_PLL_CFG_OUTDIV_MASK)
+
+#define AR934X_CPU_PLL_CFG_REFDIV_MSB  16
+#define AR934X_CPU_PLL_CFG_REFDIV_LSB  12
+#define AR934X_CPU_PLL_CFG_REFDIV_MASK 0x0001f000
+
+#define AR934X_CPU_PLL_CFG_REFDIV_GET(x)               \
+       (((x) & AR934X_CPU_PLL_CFG_REFDIV_MASK) >>      \
+       AR934X_CPU_PLL_CFG_REFDIV_LSB)
+
+#define AR934X_CPU_PLL_CFG_REFDIV_SET(x)               \
+       (((x) << AR934X_CPU_PLL_CFG_REFDIV_LSB) &       \
+       AR934X_CPU_PLL_CFG_REFDIV_MASK)
+
+#define AR934X_CPU_PLL_CFG_REFDIV_RESET        2
+
+#define AR934X_CPU_PLL_CFG_NINT_MSB    11
+#define AR934X_CPU_PLL_CFG_NINT_LSB    6
+#define AR934X_CPU_PLL_CFG_NINT_MASK   0x00000fc0
+
+#define AR934X_CPU_PLL_CFG_NINT_GET(x)                 \
+       (((x) & AR934X_CPU_PLL_CFG_NINT_MASK) >>        \
+       AR934X_CPU_PLL_CFG_NINT_LSB)
+
+#define AR934X_CPU_PLL_CFG_NINT_SET(x)                 \
+       (((x) << AR934X_CPU_PLL_CFG_NINT_LSB) &         \
+       AR934X_CPU_PLL_CFG_NINT_MASK)
+
+#define AR934X_CPU_PLL_CFG_NINT_RESET  20
+
+#define AR934X_CPU_PLL_CFG_NFRAC_MSB   5
+#define AR934X_CPU_PLL_CFG_NFRAC_LSB   0
+#define AR934X_CPU_PLL_CFG_NFRAC_MASK  0x0000003f
+
+#define AR934X_CPU_PLL_CFG_NFRAC_GET(x)                \
+       (((x) & AR934X_CPU_PLL_CFG_NFRAC_MASK) >>       \
+       AR934X_CPU_PLL_CFG_NFRAC_LSB)
+
+#define AR934X_CPU_PLL_CFG_NFRAC_SET(x)                \
+       (((x) << AR934X_CPU_PLL_CFG_NFRAC_LSB) &        \
+       AR934X_CPU_PLL_CFG_NFRAC_MASK)
+
+#define AR934X_DDR_PLL_CFG_REFDIV_MSB  20
+#define AR934X_DDR_PLL_CFG_REFDIV_LSB  16
+#define AR934X_DDR_PLL_CFG_REFDIV_MASK 0x001f0000
+
+#define AR934X_DDR_PLL_CFG_REFDIV_GET(x)               \
+       (((x) & AR934X_DDR_PLL_CFG_REFDIV_MASK) >>      \
+       AR934X_DDR_PLL_CFG_REFDIV_LSB)
+
+#define AR934X_DDR_PLL_CFG_REFDIV_SET(x)               \
+       (((x) << AR934X_DDR_PLL_CFG_REFDIV_LSB) &       \
+       AR934X_DDR_PLL_CFG_REFDIV_MASK)
+
+#define AR934X_DDR_PLL_CFG_REFDIV_RESET        2
+
+#define AR934X_DDR_PLL_CFG_NINT_MSB    15
+#define AR934X_DDR_PLL_CFG_NINT_LSB    10
+#define AR934X_DDR_PLL_CFG_NINT_MASK   0x0000fc00
+
+#define AR934X_DDR_PLL_CFG_NINT_GET(x)                 \
+       (((x) & AR934X_DDR_PLL_CFG_NINT_MASK) >>        \
+       AR934X_DDR_PLL_CFG_NINT_LSB)
+
+#define AR934X_DDR_PLL_CFG_NINT_SET(x)                 \
+       (((x) << AR934X_DDR_PLL_CFG_NINT_LSB) &         \
+       AR934X_DDR_PLL_CFG_NINT_MASK)
+
+#define AR934X_DDR_PLL_CFG_NINT_RESET  20
+
+#define AR934X_DDR_PLL_CFG_NFRAC_MSB   9
+#define AR934X_DDR_PLL_CFG_NFRAC_LSB   0
+#define AR934X_DDR_PLL_CFG_NFRAC_MASK  0x000003ff
+
+#define AR934X_DDR_PLL_CFG_NFRAC_GET(x)                \
+       (((x) & AR934X_DDR_PLL_CFG_NFRAC_MASK) >>       \
+       AR934X_DDR_PLL_CFG_NFRAC_LSB)
+
+#define AR934X_DDR_PLL_CFG_NFRAC_SET(x)                \
+       (((x) << AR934X_DDR_PLL_CFG_NFRAC_LSB) &        \
+       AR934X_DDR_PLL_CFG_NFRAC_MASK)
+
+#define AR934X_DDR_PLL_CFG_NFRAC_RESET 512
+
+#define AR934X_CPU_DDR_CLK_CTRL_AHB_POST_DIV_MSB       19
+#define AR934X_CPU_DDR_CLK_CTRL_AHB_POST_DIV_LSB       15
+#define AR934X_CPU_DDR_CLK_CTRL_AHB_POST_DIV_MASK      0x000f8000
+
+#define AR934X_CPU_DDR_CLK_CTRL_AHB_POST_DIV_GET(x)            \
+       (((x) & AR934X_CPU_DDR_CLK_CTRL_AHB_POST_DIV_MASK) >>   \
+       AR934X_CPU_DDR_CLK_CTRL_AHB_POST_DIV_LSB)
+
+#define AR934X_CPU_DDR_CLK_CTRL_AHB_POST_DIV_SET(x)            \
+       (((x) << AR934X_CPU_DDR_CLK_CTRL_AHB_POST_DIV_LSB) &    \
+       AR934X_CPU_DDR_CLK_CTRL_AHB_POST_DIV_MASK)
+
+#define AR934X_CPU_DDR_CLK_CTRL_AHB_POST_DIV_RESET             0
+
+#define AR934X_CPU_DDR_CLK_CTRL_DDR_POST_DIV_MSB       14
+#define AR934X_CPU_DDR_CLK_CTRL_DDR_POST_DIV_LSB       10
+#define AR934X_CPU_DDR_CLK_CTRL_DDR_POST_DIV_MASK      0x00007c00
+
+#define AR934X_CPU_DDR_CLK_CTRL_DDR_POST_DIV_GET(x)            \
+       (((x) & AR934X_CPU_DDR_CLK_CTRL_DDR_POST_DIV_MASK) >>   \
+       AR934X_CPU_DDR_CLK_CTRL_DDR_POST_DIV_LSB)
+
+#define AR934X_CPU_DDR_CLK_CTRL_DDR_POST_DIV_SET(x)            \
+       (((x) << AR934X_CPU_DDR_CLK_CTRL_DDR_POST_DIV_LSB) &    \
+       AR934X_CPU_DDR_CLK_CTRL_DDR_POST_DIV_MASK)
+
+#define AR934X_CPU_DDR_CLK_CTRL_DDR_POST_DIV_RESET     0
+
+#define AR934X_CPU_DDR_CLK_CTRL_CPU_POST_DIV_MSB       9
+#define AR934X_CPU_DDR_CLK_CTRL_CPU_POST_DIV_LSB       5
+#define AR934X_CPU_DDR_CLK_CTRL_CPU_POST_DIV_MASK      0x000003e0
+
+#define AR934X_CPU_DDR_CLK_CTRL_CPU_POST_DIV_GET(x)            \
+       (((x) & AR934X_CPU_DDR_CLK_CTRL_CPU_POST_DIV_MASK) >>   \
+       AR934X_CPU_DDR_CLK_CTRL_CPU_POST_DIV_LSB)
+
+#define AR934X_CPU_DDR_CLK_CTRL_CPU_POST_DIV_SET(x)            \
+       (((x) << AR934X_CPU_DDR_CLK_CTRL_CPU_POST_DIV_LSB) &    \
+       AR934X_CPU_DDR_CLK_CTRL_CPU_POST_DIV_MASK)
+
+#define AR934X_CPU_DDR_CLK_CTRL_CPU_POST_DIV_RESET     0
+
+#define AR934X_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL_MSB 24
+#define AR934X_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL_LSB 24
+#define AR934X_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL_MASK        0x01000000
+
+#define AR934X_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL_GET(x)      \
+       (((x) & AR934X_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL_MASK) >> \
+       AR934X_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL_LSB)
+
+#define AR934X_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL_SET(x)      \
+       (((x) << AR934X_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL_LSB) & \
+       AR934X_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL_MASK)
+
+#define AR934X_CPU_DDR_CLK_CTRL_AHBCLK_FROM_DDRPLL_RESET       1
+
 extern void __iomem *ar71xx_pll_base;
 
 static inline void ar71xx_pll_wr(unsigned reg, u32 val)
@@ -385,6 +552,11 @@ void ar71xx_ddr_flush(u32 reg);
 
 #define AR724X_RESET_REG_RESET_MODULE          0x1c
 
+#define AR934X_RESET_REG_RESET_MODULE          0x1c
+#define AR934X_RESET_REG_BOOTSTRAP             0xb0
+/* 0 - 25MHz   1 - 40 MHz */
+#define AR934X_REF_CLK_40                      (1 << 4)
+
 #define WDOG_CTRL_LAST_RESET           BIT(31)
 #define WDOG_CTRL_ACTION_MASK          3
 #define WDOG_CTRL_ACTION_NONE          0       /* no action */
@@ -442,6 +614,9 @@ void ar71xx_ddr_flush(u32 reg);
 #define REV_ID_MAJOR_AR7240    0x00c0
 #define REV_ID_MAJOR_AR7241    0x0100
 #define REV_ID_MAJOR_AR7242    0x1100
+#define REV_ID_MAJOR_AR9341    0x0120
+#define REV_ID_MAJOR_AR9342    0x1120
+#define REV_ID_MAJOR_AR9344    0x2120
 
 #define AR71XX_REV_ID_MINOR_MASK       0x3
 #define AR71XX_REV_ID_MINOR_AR7130     0x0
@@ -458,6 +633,8 @@ void ar71xx_ddr_flush(u32 reg);
 
 #define AR724X_REV_ID_REVISION_MASK    0x3
 
+#define AR934X_REV_ID_REVISION_MASK    0xf
+
 extern void __iomem *ar71xx_reset_base;
 
 static inline void ar71xx_reset_wr(unsigned reg, u32 val)