target/linux/ipq806x/patches-5.10/099-2-Documentation-devicetree-mtd-qcom_nandc-document-qco.patch

   1 From 6fb003a7a117f97a35b078ba726c84adeae29c4c Mon Sep 17 00:00:00 2001
   2 From: Ansuel Smith <ansuelsmth@gmail.com>
   3 Date: Wed, 10 Feb 2021 10:54:19 +0100
   4 Subject: [PATCH 2/2] Documentation: devicetree: mtd: qcom_nandc: document
   5  qcom,boot_layout_size binding
   6
   7 Document new qcom,boot_layout_size binding used to apply special
   8 read/write confituation to boots partitions.
   9
  10 Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
  11 ---
  12  Documentation/devicetree/bindings/mtd/qcom_nandc.txt | 11 +++++++++++
  13  1 file changed, 11 insertions(+)
  14
  15 diff --git a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
  16 index 5647913d8837..3cf1dd5ebad2 100644
  17 --- a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
  18 +++ b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
  19 @@ -56,6 +56,15 @@ Optional properties:
  20                         be used according to chip requirement and available
  21                         OOB size.
  22
  23 +EBI2 specific properties:
  24 +- nand-is-boot-medium: nand contains boot partitions and different ecc configuration
  25 +                       should be used for these partitions.
  26 +- qcom,boot_pages_size:        should contain the size of the total boot partitions
  27 +                       where the boot layout read/write specific configuration
  28 +                       should be used. The boot layout is considered from the
  29 +                       start of the nand to the value set in this binding.
  30 +                       Only used in combination with 'nand-is-boot-medium'.
  31 +
  32  Each nandcs device node may optionally contain a 'partitions' sub-node, which
  33  further contains sub-nodes describing the flash partition mapping. See
  34  partition.txt for more detail.
  35 @@ -84,6 +93,9 @@ nand-controller@1ac00000 {
  36                 nand-ecc-strength = <4>;
  37                 nand-bus-width = <8>;
  38
  39 +               nand-is-boot-medium;
  40 +               qcom,boot_pages_size: <0x58a0000>;
  41 +
  42                 partitions {
  43                         compatible = "fixed-partitions";
  44                         #address-cells = <1>;
  45 --
  46 2.29.2
  47