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-rw-r--r--target/linux/ipq806x/patches-5.15/099-2-Documentation-devicetree-mtd-qcom_nandc-document-qco.patch42
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diff --git a/target/linux/ipq806x/patches-5.15/099-2-Documentation-devicetree-mtd-qcom_nandc-document-qco.patch b/target/linux/ipq806x/patches-5.15/099-2-Documentation-devicetree-mtd-qcom_nandc-document-qco.patch
new file mode 100644
index 0000000000..79036cb057
--- /dev/null
+++ b/target/linux/ipq806x/patches-5.15/099-2-Documentation-devicetree-mtd-qcom_nandc-document-qco.patch
@@ -0,0 +1,42 @@
+From 6fb003a7a117f97a35b078ba726c84adeae29c4c Mon Sep 17 00:00:00 2001
+From: Ansuel Smith <ansuelsmth@gmail.com>
+Date: Wed, 10 Feb 2021 10:54:19 +0100
+Subject: [PATCH 2/2] Documentation: devicetree: mtd: qcom_nandc: document
+ qcom,boot_layout_size binding
+
+Document new qcom,boot_layout_size binding used to apply special
+read/write confituation to boots partitions.
+
+Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
+---
+ Documentation/devicetree/bindings/mtd/qcom_nandc.txt | 11 +++++++++++
+ 1 file changed, 11 insertions(+)
+
+--- a/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
++++ b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
+@@ -52,6 +52,15 @@ Optional properties:
+ be used according to chip requirement and available
+ OOB size.
+
++EBI2 specific properties:
++- nand-is-boot-medium: nand contains boot partitions and different ecc configuration
++ should be used for these partitions.
++- qcom,boot_pages_size: should contain the size of the total boot partitions
++ where the boot layout read/write specific configuration
++ should be used. The boot layout is considered from the
++ start of the nand to the value set in this binding.
++ Only used in combination with 'nand-is-boot-medium'.
++
+ Each nandcs device node may optionally contain a 'partitions' sub-node, which
+ further contains sub-nodes describing the flash partition mapping. See
+ partition.txt for more detail.
+@@ -80,6 +89,9 @@ nand-controller@1ac00000 {
+ nand-ecc-strength = <4>;
+ nand-bus-width = <8>;
+
++ nand-is-boot-medium;
++ qcom,boot_pages_size: <0x58a0000>;
++
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;