target/linux/brcm2708/patches-4.4/0150-BCM270X_DT-Add-dtparams-for-the-SD-interface.patch

   1 From 21e15ef5922cdfeb205a633f8720fde9d01fa074 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Fri, 12 Feb 2016 15:38:00 +0000
   4 Subject: [PATCH 150/156] BCM270X_DT: Add dtparams for the SD interface
   5
   6 Add new base dtparams sd_overclock, sd_force_pio, sd_pio_limit
   7 and sd_debug.
   8 ---
   9  arch/arm/boot/dts/bcm2708-rpi-b-plus.dts       |  4 ++++
  10  arch/arm/boot/dts/bcm2708-rpi-b.dts            |  4 ++++
  11  arch/arm/boot/dts/bcm2708-rpi-cm.dts           |  1 -
  12  arch/arm/boot/dts/bcm2708-rpi-cm.dtsi          | 13 +++++++++++++
  13  arch/arm/boot/dts/bcm2708_common.dtsi          |  2 ++
  14  arch/arm/boot/dts/bcm2709-rpi-2-b.dts          |  4 ++++
  15  arch/arm/boot/dts/overlays/README              | 11 ++++++++++-
  16  arch/arm/boot/dts/overlays/mmc-overlay.dts     |  1 -
  17  arch/arm/boot/dts/overlays/sdhost-overlay.dts  | 27 +++++++++++++-------------
  18  arch/arm/boot/dts/overlays/sdtweak-overlay.dts | 14 ++++++-------
  19  10 files changed, 58 insertions(+), 23 deletions(-)
  20
  21 --- a/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
  22 +++ b/arch/arm/boot/dts/bcm2708-rpi-b-plus.dts
  23 @@ -141,5 +141,9 @@
  24                 audio = <&audio>,"status";
  25                 watchdog = <&watchdog>,"status";
  26                 random = <&random>,"status";
  27 +               sd_overclock = <&sdhost>,"brcm,overclock-50:0";
  28 +               sd_force_pio = <&sdhost>,"brcm,force-pio?";
  29 +               sd_pio_limit = <&sdhost>,"brcm,pio-limit:0";
  30 +               sd_debug     = <&sdhost>,"brcm,debug";
  31         };
  32  };
  33 --- a/arch/arm/boot/dts/bcm2708-rpi-b.dts
  34 +++ b/arch/arm/boot/dts/bcm2708-rpi-b.dts
  35 @@ -131,5 +131,9 @@
  36                 audio = <&audio>,"status";
  37                 watchdog = <&watchdog>,"status";
  38                 random = <&random>,"status";
  39 +               sd_overclock = <&sdhost>,"brcm,overclock-50:0";
  40 +               sd_force_pio = <&sdhost>,"brcm,force-pio?";
  41 +               sd_pio_limit = <&sdhost>,"brcm,pio-limit:0";
  42 +               sd_debug     = <&sdhost>,"brcm,debug";
  43         };
  44  };
  45 --- a/arch/arm/boot/dts/bcm2708-rpi-cm.dts
  46 +++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dts
  47 @@ -97,6 +97,5 @@
  48                 i2c0_baudrate = <&i2c0>,"clock-frequency:0";
  49                 i2c1_baudrate = <&i2c1>,"clock-frequency:0";
  50                 i2c2_baudrate = <&i2c2>,"clock-frequency:0";
  51 -               core_freq = <&clk_core>,"clock-frequency:0";
  52         };
  53  };
  54 --- a/arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
  55 +++ b/arch/arm/boot/dts/bcm2708-rpi-cm.dtsi
  56 @@ -7,6 +7,13 @@
  57         };
  58  };
  59
  60 +&gpio {
  61 +       sdhost_pins: sdhost_pins {
  62 +               brcm,pins = <48 49 50 51 52 53>;
  63 +               brcm,function = <4>; /* alt0 */
  64 +       };
  65 +};
  66 +
  67  &leds {
  68         act_led: act {
  69                 label = "led0";
  70 @@ -29,6 +36,8 @@
  71
  72  / {
  73         __overrides__ {
  74 +               core_freq = <&clk_core>,"clock-frequency:0";
  75 +
  76                 act_led_gpio = <&act_led>,"gpios:4";
  77                 act_led_activelow = <&act_led>,"gpios:8";
  78                 act_led_trigger = <&act_led>,"linux,default-trigger";
  79 @@ -36,5 +45,9 @@
  80                 audio = <&audio>,"status";
  81                 watchdog = <&watchdog>,"status";
  82                 random = <&random>,"status";
  83 +               sd_overclock = <&sdhost>,"brcm,overclock-50:0";
  84 +               sd_force_pio = <&sdhost>,"brcm,force-pio?";
  85 +               sd_pio_limit = <&sdhost>,"brcm,pio-limit:0";
  86 +               sd_debug     = <&sdhost>,"brcm,debug";
  87         };
  88  };
  89 --- a/arch/arm/boot/dts/bcm2708_common.dtsi
  90 +++ b/arch/arm/boot/dts/bcm2708_common.dtsi
  91 @@ -135,6 +135,7 @@
  92                         dmas = <&dma 13>,
  93                                <&dma 13>;
  94                         dma-names = "tx", "rx";
  95 +                       brcm,overclock-50 = <0>;
  96                         brcm,pio-limit = <1>;
  97                         status = "disabled";
  98                 };
  99 @@ -203,6 +204,7 @@
 100                         dmas = <&dma 11>,
 101                                <&dma 11>;
 102                         dma-names = "tx", "rx";
 103 +                       brcm,overclock-50 = <0>;
 104                         status = "disabled";
 105                 };
 106
 107 --- a/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
 108 +++ b/arch/arm/boot/dts/bcm2709-rpi-2-b.dts
 109 @@ -141,5 +141,9 @@
 110                 audio = <&audio>,"status";
 111                 watchdog = <&watchdog>,"status";
 112                 random = <&random>,"status";
 113 +               sd_overclock = <&sdhost>,"brcm,overclock-50:0";
 114 +               sd_force_pio = <&sdhost>,"brcm,force-pio?";
 115 +               sd_pio_limit = <&sdhost>,"brcm,pio-limit:0";
 116 +               sd_debug     = <&sdhost>,"brcm,debug";
 117         };
 118  };
 119 --- a/arch/arm/boot/dts/overlays/README
 120 +++ b/arch/arm/boot/dts/overlays/README
 121 @@ -112,6 +112,16 @@ Params:
 122          random                  Set to "on" to enable the hardware random
 123                                  number generator (default "on")
 124
 125 +        sd_overclock            Clock (in MHz) to use when the MMC framework
 126 +                                requests 50MHz
 127 +
 128 +        sd_force_pio            Disable DMA support for SD driver (default off)
 129 +
 130 +        sd_pio_limit            Number of blocks above which to use DMA for
 131 +                                SD card (default 1)
 132 +
 133 +        sd_debug                Enable debug output from SD driver (default off)
 134 +
 135          uart0                   Set to "off" to disable uart0 (default "on")
 136
 137          watchdog                Set to "on" to enable the hardware watchdog
 138 @@ -443,7 +453,6 @@ Info:   Selects the bcm2835-mmc SD/MMC d
 139  Load:   dtoverlay=mmc,<param>=<val>
 140  Params: overclock_50            Clock (in MHz) to use when the MMC framework
 141                                  requests 50MHz
 142 -        force_pio               Disable DMA support
 143
 144
 145  Name:   mz61581
 146 --- a/arch/arm/boot/dts/overlays/mmc-overlay.dts
 147 +++ b/arch/arm/boot/dts/overlays/mmc-overlay.dts
 148 @@ -34,6 +34,5 @@
 149
 150         __overrides__ {
 151                 overclock_50     = <&frag0>,"brcm,overclock-50:0";
 152 -               force_pio        = <&frag0>,"brcm,force-pio?";
 153         };
 154  };
 155 --- a/arch/arm/boot/dts/overlays/sdhost-overlay.dts
 156 +++ b/arch/arm/boot/dts/overlays/sdhost-overlay.dts
 157 @@ -1,19 +1,14 @@
 158  /dts-v1/;
 159  /plugin/;
 160
 161 +/* Provide backwards compatible aliases for the old sdhost dtparams. */
 162 +
 163  /{
 164         compatible = "brcm,bcm2708";
 165
 166         fragment@0 {
 167 -               target = <&mmc>;
 168 -               __overlay__ {
 169 -                       status = "disabled";
 170 -               };
 171 -       };
 172 -
 173 -       fragment@1 {
 174                 target = <&sdhost>;
 175 -               frag1: __overlay__ {
 176 +               frag0: __overlay__ {
 177                         brcm,overclock-50 = <0>;
 178                         brcm,pio-limit = <1>;
 179                         brcm,debug-flags = <0>;
 180 @@ -21,11 +16,17 @@
 181                 };
 182         };
 183
 184 +       fragment@1 {
 185 +               target = <&mmc>;
 186 +               __overlay__ {
 187 +                       status = "disabled";
 188 +               };
 189 +       };
 190 +
 191         __overrides__ {
 192 -               overclock_50     = <&frag1>,"brcm,overclock-50:0";
 193 -               force_pio        = <&frag1>,"brcm,force-pio?";
 194 -               pio_limit        = <&frag1>,"brcm,pio-limit:0";
 195 -               debug            = <&frag1>,"brcm,debug?";
 196 -               debug_flags      = <&frag1>,"brcm,debug-flags:0";
 197 +               overclock_50     = <&frag0>,"brcm,overclock-50:0";
 198 +               force_pio        = <&frag0>,"brcm,force-pio?";
 199 +               pio_limit        = <&frag0>,"brcm,pio-limit:0";
 200 +               debug            = <&frag0>,"brcm,debug?";
 201         };
 202  };
 203 --- a/arch/arm/boot/dts/overlays/sdtweak-overlay.dts
 204 +++ b/arch/arm/boot/dts/overlays/sdtweak-overlay.dts
 205 @@ -1,23 +1,23 @@
 206  /dts-v1/;
 207  /plugin/;
 208
 209 +/* Provide backwards compatible aliases for the old sdhost dtparams. */
 210 +
 211  /{
 212         compatible = "brcm,bcm2708";
 213
 214         fragment@0 {
 215                 target = <&sdhost>;
 216 -               frag1: __overlay__ {
 217 +               frag0: __overlay__ {
 218                         brcm,overclock-50 = <0>;
 219                         brcm,pio-limit = <1>;
 220 -                       brcm,debug-flags = <0>;
 221                 };
 222         };
 223
 224         __overrides__ {
 225 -               overclock_50     = <&frag1>,"brcm,overclock-50:0";
 226 -               force_pio        = <&frag1>,"brcm,force-pio?";
 227 -               pio_limit        = <&frag1>,"brcm,pio-limit:0";
 228 -               debug            = <&frag1>,"brcm,debug?";
 229 -               debug_flags      = <&frag1>,"brcm,debug-flags:0";
 230 +               overclock_50     = <&frag0>,"brcm,overclock-50:0";
 231 +               force_pio        = <&frag0>,"brcm,force-pio?";
 232 +               pio_limit        = <&frag0>,"brcm,pio-limit:0";
 233 +               debug            = <&frag0>,"brcm,debug?";
 234         };
 235  };