target/linux/bcm53xx/patches-4.4/112-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 --- a/drivers/firmware/broadcom/Kconfig
  25 +++ b/drivers/firmware/broadcom/Kconfig
  26 @@ -9,3 +9,14 @@ config BCM47XX_NVRAM
  27           This driver provides an easy way to get value of requested parameter.
  28           It simply reads content of NVRAM and parses it. It doesn't control any
  29           hardware part itself.
  30 +
  31 +config BCM47XX_SPROM
  32 +       bool "Broadcom SPROM driver"
  33 +       depends on BCM47XX_NVRAM
  34 +       help
  35 +         Broadcom devices store configuration data in SPROM. Accessing it is
  36 +         specific to the bus host type, e.g. PCI(e) devices have it mapped in
  37 +         a PCI BAR.
  38 +         In case of SoC devices SPROM content is stored on a flash used by
  39 +         bootloader firmware CFE. This driver provides method to ssb and bcma
  40 +         drivers to read SPROM on SoC.
  41 --- a/drivers/firmware/broadcom/Makefile
  42 +++ b/drivers/firmware/broadcom/Makefile
  43 @@ -1 +1,2 @@
  44  obj-$(CONFIG_BCM47XX_NVRAM)            += bcm47xx_nvram.o
  45 +obj-$(CONFIG_BCM47XX_SPROM)            += bcm47xx_sprom.o