|
|
|
|
From 28d0ed88f536dd639adf1b0c7c08e04be3c8f294 Mon Sep 17 00:00:00 2001
|
|
|
|
|
From: Thomas Pedersen <twp@codeaurora.org>
|
|
|
|
|
Date: Mon, 16 May 2016 17:58:50 -0700
|
|
|
|
|
Subject: [PATCH 01/69] dtbindings: qcom_adm: Fix channel specifiers
|
|
|
|
|
|
|
|
|
|
Original patch from Andy Gross.
|
|
|
|
|
|
|
|
|
|
This patch removes the crci information from the dma
|
|
|
|
|
channel property. At least one client device requires
|
|
|
|
|
using more than one CRCI value for a channel. This does
|
|
|
|
|
not match the current binding and the crci information
|
|
|
|
|
needs to be removed.
|
|
|
|
|
|
|
|
|
|
Instead, the client device will provide this information
|
|
|
|
|
via other means.
|
|
|
|
|
|
|
|
|
|
Signed-off-by: Andy Gross <agross@codeaurora.org>
|
|
|
|
|
Signed-off-by: Thomas Pedersen <twp@codeaurora.org>
|
|
|
|
|
---
|
|
|
|
|
Documentation/devicetree/bindings/dma/qcom_adm.txt | 16 ++++++----------
|
|
|
|
|
1 file changed, 6 insertions(+), 10 deletions(-)
|
|
|
|
|
|
|
|
|
|
--- a/Documentation/devicetree/bindings/dma/qcom_adm.txt
|
|
|
|
|
+++ b/Documentation/devicetree/bindings/dma/qcom_adm.txt
|
|
|
|
|
@@ -4,8 +4,7 @@ Required properties:
|
|
|
|
|
- compatible: must contain "qcom,adm" for IPQ/APQ8064 and MSM8960
|
|
|
|
|
- reg: Address range for DMA registers
|
|
|
|
|
- interrupts: Should contain one interrupt shared by all channels
|
|
|
|
|
-- #dma-cells: must be <2>. First cell denotes the channel number. Second cell
|
|
|
|
|
- denotes CRCI (client rate control interface) flow control assignment.
|
|
|
|
|
+- #dma-cells: must be <1>. First cell denotes the channel number.
|
|
|
|
|
- clocks: Should contain the core clock and interface clock.
|
|
|
|
|
- clock-names: Must contain "core" for the core clock and "iface" for the
|
|
|
|
|
interface clock.
|
|
|
|
|
@@ -22,7 +21,7 @@ Example:
|
|
|
|
|
compatible = "qcom,adm";
|
|
|
|
|
reg = <0x18300000 0x100000>;
|
|
|
|
|
interrupts = <0 170 0>;
|
|
|
|
|
- #dma-cells = <2>;
|
|
|
|
|
+ #dma-cells = <1>;
|
|
|
|
|
|
|
|
|
|
clocks = <&gcc ADM0_CLK>, <&gcc ADM0_PBUS_CLK>;
|
|
|
|
|
clock-names = "core", "iface";
|
|
|
|
|
@@ -35,15 +34,12 @@ Example:
|
|
|
|
|
qcom,ee = <0>;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
-DMA clients must use the format descripted in the dma.txt file, using a three
|
|
|
|
|
+DMA clients must use the format descripted in the dma.txt file, using a two
|
|
|
|
|
cell specifier for each channel.
|
|
|
|
|
|
|
|
|
|
-Each dmas request consists of 3 cells:
|
|
|
|
|
+Each dmas request consists of two cells:
|
|
|
|
|
1. phandle pointing to the DMA controller
|
|
|
|
|
2. channel number
|
|
|
|
|
- 3. CRCI assignment, if applicable. If no CRCI flow control is required, use 0.
|
|
|
|
|
- The CRCI is used for flow control. It identifies the peripheral device that
|
|
|
|
|
- is the source/destination for the transferred data.
|
|
|
|
|
|
|
|
|
|
Example:
|
|
|
|
|
|
|
|
|
|
@@ -56,7 +52,7 @@ Example:
|
|
|
|
|
|
|
|
|
|
cs-gpios = <&qcom_pinmux 20 0>;
|
|
|
|
|
|
|
|
|
|
- dmas = <&adm_dma 6 9>,
|
|
|
|
|
- <&adm_dma 5 10>;
|
|
|
|
|
+ dmas = <&adm_dma 6>,
|
|
|
|
|
+ <&adm_dma 5>;
|
|
|
|
|
dma-names = "rx", "tx";
|
|
|
|
|
};
|
