target/linux/bcm53xx/patches-3.18/112-bcm53xx-sprom-add-sprom-driver.patch

   1 From 4e0ab3269a6d260a41a3673157753147f5f71341 Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Sun, 4 May 2014 13:19:20 +0200
   4 Subject: [PATCH 03/17] bcm47xx-sprom: add Broadcom sprom parser driver
   5
   6 This driver needs an nvram driver and fetches the sprom values from the
   7 nvram and provides it to any other driver. The calibration data for the
   8 wifi chip the mac address and some more board description data is
   9 stores in the sprom.
  10
  11 This is based on a copy of arch/mips/bcm47xx/sprom.c and my plan is to
  12 make the bcm47xx MIPS SoCs also use this driver some time later.
  13
  14 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  15 ---
  16  .../devicetree/bindings/misc/bcm47xx-sprom.txt     |  16 +
  17  drivers/misc/Kconfig                               |  11 +
  18  drivers/misc/Makefile                              |   1 +
  19  drivers/misc/bcm47xx-sprom.c                       | 690 +++++++++++++++++++++
  20  4 files changed, 718 insertions(+)
  21  create mode 100644 Documentation/devicetree/bindings/misc/bcm47xx-sprom.txt
  22  create mode 100644 drivers/misc/bcm47xx-sprom.c
  23
  24 --- /dev/null
  25 +++ b/Documentation/devicetree/bindings/misc/bcm47xx-sprom.txt
  26 @@ -0,0 +1,16 @@
  27 +Broadcom bcm47xx/bcm53xx sprom converter
  28 +
  29 +This driver provbides an sprom based on a given nvram.
  30 +
  31 +Required properties:
  32 +
  33 +- compatible : brcm,bcm47xx-sprom
  34 +
  35 +- nvram : reference to a nvram driver, e.g. bcm47xx-nvram
  36 +
  37 +Example:
  38 +
  39 +sprom0: sprom@0 {
  40 +       compatible = "brcm,bcm47xx-sprom";
  41 +       nvram = <&nvram0>;
  42 +};
  43 --- a/drivers/misc/Kconfig
  44 +++ b/drivers/misc/Kconfig
  45 @@ -515,6 +515,17 @@ config VEXPRESS_SYSCFG
  46           bus. System Configuration interface is one of the possible means
  47           of generating transactions on this bus.
  48
  49 +config BCM47XX_SPROM
  50 +       tristate "BCM47XX sprom driver"
  51 +       help
  52 +         This driver parses the sprom from a given nvram which is found on
  53 +         Broadcom bcm47xx and bcm53xx SoCs.
  54 +
  55 +         The sprom contains board configuration data like the
  56 +         calibration data fro the wifi chips, the mac addresses used
  57 +         by the board and many other board configuration data. This
  58 +         driver will provide the sprom to bcma.
  59 +
  60  source "drivers/misc/c2port/Kconfig"
  61  source "drivers/misc/eeprom/Kconfig"
  62  source "drivers/misc/cb710/Kconfig"
  63 --- a/drivers/misc/Makefile
  64 +++ b/drivers/misc/Makefile
  65 @@ -56,3 +56,4 @@ obj-$(CONFIG_GENWQE)          += genwqe/
  66  obj-$(CONFIG_ECHO)             += echo/
  67  obj-$(CONFIG_VEXPRESS_SYSCFG)  += vexpress-syscfg.o
  68  obj-$(CONFIG_CXL_BASE)         += cxl/
  69 +obj-$(CONFIG_BCM47XX_SPROM)    += bcm47xx-sprom.o