Pandora Sourcecodes - openembedded.git/blob

   1 From a1a4ba7a5fce36522a994cb06d6d76931964578c Mon Sep 17 00:00:00 2001
   2 From: Steve Sakoman <steve@sakoman.com>
   3 Date: Wed, 10 Feb 2010 15:23:19 -0800
   4 Subject: [PATCH 04/50] OMAP3: Set VAUX2 to 1.8V for EHCI PHY on Beagle Rev C4 boards
   5
   6 ---
   7  board/ti/beagle/beagle.c |    5 +++++
   8  drivers/power/twl4030.c  |   45 +++++++++++++++++++++++++--------------------
   9  include/twl4030.h        |   15 +++++++++++++++
  10  3 files changed, 45 insertions(+), 20 deletions(-)
  11
  12 diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c
  13 index ba16dd7..b4ea7e6 100644
  14 --- a/board/ti/beagle/beagle.c
  15 +++ b/board/ti/beagle/beagle.c
  16 @@ -120,6 +120,11 @@ int misc_init_r(void)
  17         case REVISION_C4:
  18                 printf("C4\n");
  19                 MUX_BEAGLE_C();
  20 +               /* Set VAUX2 to 1.8V for EHCI PHY */
  21 +               twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
  22 +                                       TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
  23 +                                       TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
  24 +                                       TWL4030_PM_RECEIVER_DEV_GRP_P1);
  25                 break;
  26         case REVISION_D:
  27                 printf("D\n");
  28 diff --git a/drivers/power/twl4030.c b/drivers/power/twl4030.c
  29 index eb066cb..f354834 100644
  30 --- a/drivers/power/twl4030.c
  31 +++ b/drivers/power/twl4030.c
  32 @@ -59,57 +59,62 @@ void twl4030_power_reset_init(void)
  33         }
  34  }
  35
  36 -
  37 -/*
  38 - * Power Init
  39 - */
  40 -#define DEV_GRP_P1             0x20
  41 -#define VAUX3_VSEL_28          0x03
  42 -#define DEV_GRP_ALL            0xE0
  43 -#define VPLL2_VSEL_18          0x05
  44 -#define VDAC_VSEL_18           0x03
  45 -
  46  void twl4030_power_init(void)
  47  {
  48         unsigned char byte;
  49
  50         /* set VAUX3 to 2.8V */
  51 -       byte = DEV_GRP_P1;
  52 +       byte = TWL4030_PM_RECEIVER_DEV_GRP_P1;
  53         twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
  54                              TWL4030_PM_RECEIVER_VAUX3_DEV_GRP);
  55 -       byte = VAUX3_VSEL_28;
  56 +       byte = TWL4030_PM_RECEIVER_VAUX3_VSEL_28;
  57         twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
  58                              TWL4030_PM_RECEIVER_VAUX3_DEDICATED);
  59
  60         /* set VPLL2 to 1.8V */
  61 -       byte = DEV_GRP_ALL;
  62 +       byte = TWL4030_PM_RECEIVER_DEV_GRP_ALL;
  63         twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
  64                              TWL4030_PM_RECEIVER_VPLL2_DEV_GRP);
  65 -       byte = VPLL2_VSEL_18;
  66 +       byte = TWL4030_PM_RECEIVER_VPLL2_VSEL_18;
  67         twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
  68                              TWL4030_PM_RECEIVER_VPLL2_DEDICATED);
  69
  70         /* set VDAC to 1.8V */
  71 -       byte = DEV_GRP_P1;
  72 +       byte = TWL4030_PM_RECEIVER_DEV_GRP_P1;
  73         twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
  74                              TWL4030_PM_RECEIVER_VDAC_DEV_GRP);
  75 -       byte = VDAC_VSEL_18;
  76 +       byte = TWL4030_PM_RECEIVER_VDAC_VSEL_18;
  77         twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
  78                              TWL4030_PM_RECEIVER_VDAC_DEDICATED);
  79  }
  80
  81 -#define VMMC1_VSEL_30          0x02
  82 -
  83  void twl4030_power_mmc_init(void)
  84  {
  85         unsigned char byte;
  86
  87 -       byte = DEV_GRP_P1;
  88 +       byte = TWL4030_PM_RECEIVER_DEV_GRP_P1;
  89         twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
  90                              TWL4030_PM_RECEIVER_VMMC1_DEV_GRP);
  91
  92         /* 3 Volts */
  93 -       byte = VMMC1_VSEL_30;
  94 +       byte = TWL4030_PM_RECEIVER_VMMC1_VSEL_30;
  95         twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
  96                              TWL4030_PM_RECEIVER_VMMC1_DEDICATED);
  97  }
  98 +
  99 +/*
 100 + * Generic function to select Device Group and Voltage
 101 + */
 102 +void twl4030_pmrecv_vsel_cfg(u8 vsel_reg, u8 vsel_val,
 103 +                               u8 dev_grp, u8 dev_grp_sel)
 104 +{
 105 +       /* Select the Device Group */
 106 +       twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, dev_grp_sel,
 107 +                               dev_grp);
 108 +
 109 +       /* Select the Voltage */
 110 +       twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, vsel_val,
 111 +                               vsel_reg);
 112 +}
 113 +
 114 +
 115 diff --git a/include/twl4030.h b/include/twl4030.h
 116 index 2b2f5ae..cc99403 100644
 117 --- a/include/twl4030.h
 118 +++ b/include/twl4030.h
 119 @@ -471,6 +471,21 @@
 120  #define TWL4030_USB_PHY_CLK_CTRL_STS                   0xFF
 121
 122  /*
 123 + * Voltage Selection in PM Receiver Module
 124 + */
 125 +#define TWL4030_PM_RECEIVER_VAUX2_VSEL_18              0x05
 126 +#define TWL4030_PM_RECEIVER_VAUX3_VSEL_28              0x03
 127 +#define TWL4030_PM_RECEIVER_VPLL2_VSEL_18              0x05
 128 +#define TWL4030_PM_RECEIVER_VDAC_VSEL_18               0x03
 129 +#define TWL4030_PM_RECEIVER_VMMC1_VSEL_30              0x02
 130 +
 131 +/*
 132 + * Device Selection in PM Receiver Module
 133 + */
 134 +#define TWL4030_PM_RECEIVER_DEV_GRP_P1                 0x20
 135 +#define TWL4030_PM_RECEIVER_DEV_GRP_ALL                        0xE0
 136 +
 137 +/*
 138   * Convience functions to read and write from TWL4030
 139   *
 140   * chip_no is the i2c address, it must be one of the chip addresses
 141 --
 142 1.6.6.1
 143