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-rw-r--r--target/linux/apm821xx/patches-4.14/302-0001-dt-bindings-add-protection-control-property.patch38
1 files changed, 38 insertions, 0 deletions
diff --git a/target/linux/apm821xx/patches-4.14/302-0001-dt-bindings-add-protection-control-property.patch b/target/linux/apm821xx/patches-4.14/302-0001-dt-bindings-add-protection-control-property.patch
new file mode 100644
index 0000000000..72297bc655
--- /dev/null
+++ b/target/linux/apm821xx/patches-4.14/302-0001-dt-bindings-add-protection-control-property.patch
@@ -0,0 +1,38 @@
+From bc183b1da77d6e2fbc801327a1811d446d34f54f Mon Sep 17 00:00:00 2001
+From: Christian Lamparter <chunkeey@gmail.com>
+Date: Wed, 31 Oct 2018 22:20:46 +0100
+Subject: [PATCH 1/2] dt-bindings: add protection control property
+
+This patch adds the protection control property and
+dt-binding definitions for the DesignWare AHB Central
+Direct Memory Access Controller.
+
+Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
+---
+ include/dt-bindings/dma/dw-dmac.h | 20 +++++++++++++++++++
+ 1 files changed, 20 insertions(+), 0 deletion(-)
+ create mode 100644 include/dt-bindings/dma/dw-dmac.h
+
+--- /dev/null
++++ b/include/dt-bindings/dma/dw-dmac.h
+@@ -0,0 +1,20 @@
++/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
++
++#ifndef __DT_BINDINGS_DMA_DW_DMAC_H__
++#define __DT_BINDINGS_DMA_DW_DMAC_H__
++
++#define DW_DMAC_CHAN_ALLOCATION_ASCENDING 0 /* zero to seven */
++#define DW_DMAC_CHAN_ALLOCATION_DESCENDING 1 /* seven to zero */
++#define DW_DMAC_CHAN_PRIORITY_ASCENDING 0 /* chan0 highest */
++#define DW_DMAC_CHAN_PRIORITY_DESCENDING 1 /* chan7 highest */
++
++/*
++ * Protection Control bits provide protection against illegal transactions.
++ * The protection bits[0:2] are one-to-one mapped to AHB HPROT[3:1] signals.
++ * The AHB HPROT[0] bit is hardwired to 1: Data Access.
++ */
++#define DW_DMAC_HPROT1_PRIVILEGED_MODE (1 << 0) /* Privileged Mode */
++#define DW_DMAC_HPROT2_BUFFERABLE (1 << 1) /* DMA is bufferable */
++#define DW_DMAC_HPROT3_CACHEABLE (1 << 2) /* DMA is cacheable */
++
++#endif /* __DT_BINDINGS_DMA_DW_DMAC_H__ */