src/patches/kernel/omap/beagle/expansion/0007-Beagle-expansion-add-beaglefpga.patch

   1 From 0c361e9db10f9ec3598bf062a605a451857ee06e Mon Sep 17 00:00:00 2001
   2 From: Bas van der Doorn <bas@doornvd.com>
   3 Date: Tue, 11 Dec 2012 06:52:22 -0600
   4 Subject: [PATCH 07/10] Beagle: expansion: add beaglefpga
   5
   6 Added SPI dev and McBSP 3 mux when FPGA is detected
   7
   8 Signed-off-by: Bas van der Doorn <bas@doornvd.com>
   9 Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
  10 ---
  11  arch/arm/mach-omap2/board-omap3beagle.c |   76 +++++++++++++++++++++++++++++++
  12  1 file changed, 76 insertions(+)
  13
  14 diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
  15 index 2322d6c..c257f3c 100644
  16 --- a/arch/arm/mach-omap2/board-omap3beagle.c
  17 +++ b/arch/arm/mach-omap2/board-omap3beagle.c
  18 @@ -44,6 +44,7 @@
  19  #include <asm/mach/arch.h>
  20  #include <asm/mach/map.h>
  21  #include <asm/mach/flash.h>
  22 +#include <linux/spi/spi.h>
  23
  24  #include <video/omapdss.h>
  25  #include <video/omap-panel-data.h>
  26 @@ -916,6 +917,68 @@ static int __init beagle_opp_init(void)
  27  }
  28  omap_device_initcall(beagle_opp_init);
  29
  30 +static void __init omap3_beagle_config_mcspi3_mux(void)
  31 +{
  32 +       /* NOTE: Clock pins need to be in input mode */
  33 +       omap_mux_init_signal("sdmmc2_clk.mcspi3_clk", OMAP_PIN_INPUT);
  34 +       omap_mux_init_signal("sdmmc2_cmd.mcspi3_simo", OMAP_PIN_OUTPUT);
  35 +       omap_mux_init_signal("sdmmc2_dat0.mcspi3_somi", OMAP_PIN_INPUT_PULLUP);
  36 +       omap_mux_init_signal("sdmmc2_dat2.mcspi3_cs1", OMAP_PIN_OUTPUT);
  37 +       omap_mux_init_signal("sdmmc2_dat3.mcspi3_cs0", OMAP_PIN_OUTPUT);
  38 +}
  39 +
  40 +static void __init omap3_beagle_config_mcspi4_mux(void)
  41 +{
  42 +       /* NOTE: Clock pins need to be in input mode */
  43 +       omap_mux_init_signal("mcbsp1_clkr.mcspi4_clk", OMAP_PIN_INPUT);
  44 +       omap_mux_init_signal("mcbsp1_dx.mcspi4_simo", OMAP_PIN_OUTPUT);
  45 +       omap_mux_init_signal("mcbsp1_dr.mcspi4_somi", OMAP_PIN_INPUT_PULLUP);
  46 +       omap_mux_init_signal("mcbsp1_fsx.mcspi4_cs0", OMAP_PIN_OUTPUT);
  47 +}
  48 +
  49 +static void __init omap3_beagle_config_mcbsp3_mux(void)
  50 +{
  51 +       omap_mux_init_signal("mcbsp3_fsx.uart2_rx", OMAP_PIN_INPUT);
  52 +       omap_mux_init_signal("uart2_cts.mcbsp3_dx", OMAP_PIN_OUTPUT);
  53 +       omap_mux_init_signal("uart2_rts.mcbsp3_dr", OMAP_PIN_INPUT);
  54 +       /* NOTE: Clock pins need to be in input mode */
  55 +       omap_mux_init_signal("uart2_tx.mcbsp3_clkx", OMAP_PIN_INPUT);
  56 +}
  57 +
  58 +static void __init omap3_beagle_config_fpga_mux(void)
  59 +{
  60 +       omap3_beagle_config_mcbsp3_mux();
  61 +       omap3_beagle_config_mcspi3_mux();
  62 +       omap3_beagle_config_mcspi4_mux();
  63 +}
  64 +
  65 +static struct spi_board_info beagle_mcspi_board_info[] = {
  66 +       /* spi 3.0 */
  67 +       {
  68 +               .modalias       = "spidev",
  69 +               .max_speed_hz   = 48000000, //48 Mbps
  70 +               .bus_num        = 3,
  71 +               .chip_select    = 0,
  72 +               .mode = SPI_MODE_1,
  73 +       },
  74 +       /* spi 3.1 */
  75 +       {
  76 +               .modalias       = "spidev",
  77 +               .max_speed_hz   = 48000000, //48 Mbps
  78 +               .bus_num        = 3,
  79 +               .chip_select    = 1,
  80 +               .mode = SPI_MODE_1,
  81 +       },
  82 +       /* spi 4.0 */
  83 +       {
  84 +               .modalias       = "spidev",
  85 +               .max_speed_hz   = 48000000, //48 Mbps
  86 +               .bus_num        = 4,
  87 +               .chip_select    = 0,
  88 +               .mode = SPI_MODE_1,
  89 +       },
  90 +};
  91 +
  92  static void __init omap3_beagle_init(void)
  93  {
  94         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
  95 @@ -1041,6 +1104,19 @@ static void __init omap3_beagle_init(void)
  96         #endif
  97         }
  98
  99 +       if (!strcmp(expansionboard_name, "beaglefpga"))
 100 +       {
 101 +       #if IS_ENABLED(CONFIG_SPI_SPIDEV)
 102 +               pr_info("Beagle expansionboard: enabling SPIdev for McSPI3/4 and pin muxing for McBSP3 slave mode\n");
 103 +
 104 +               /* FPGA pin settings configure McSPI 3, McSPI 4 and McBSP 3 */
 105 +               omap3_beagle_config_fpga_mux();
 106 +
 107 +               /* register McSPI 3 and McSPI 4 for FPGA programming and control */
 108 +               spi_register_board_info(beagle_mcspi_board_info, ARRAY_SIZE(beagle_mcspi_board_info));
 109 +       #endif
 110 +       }
 111 +
 112         if (!strcmp(expansionboard2_name, "bbtoys-ulcd"))
 113         {
 114         #if IS_ENABLED(CONFIG_TOUCHSCREEN_TSC2007)
 115 --
 116 1.7.10.4
 117