mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 17:01:14 +00:00
77 lines
2.8 KiB
Diff
77 lines
2.8 KiB
Diff
|
Content-Type: text/plain; charset="utf-8"
|
||
|
|
MIME-Version: 1.0
|
||
|
|
Content-Transfer-Encoding: 7bit
|
||
|
|
Subject: [v6,1/2] dt/bindings: qcom_adm: Fix channel specifiers
|
||
|
|
From: Andy Gross <agross@codeaurora.org>
|
||
|
|
X-Patchwork-Id: 6027361
|
||
|
|
Message-Id: <1426571172-9711-2-git-send-email-agross@codeaurora.org>
|
||
|
|
To: Vinod Koul <vinod.koul@intel.com>
|
||
|
|
Cc: devicetree@vger.kernel.org, dmaengine@vger.kernel.org,
|
||
|
|
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
|
||
|
|
linux-arm-kernel@lists.infradead.org, Kumar Gala <galak@codeaurora.org>,
|
||
|
|
Bjorn Andersson <bjorn.andersson@sonymobile.com>,
|
||
|
|
Andy Gross <agross@codeaurora.org>
|
||
|
|
Date: Tue, 17 Mar 2015 00:46:11 -0500
|
||
|
|
|
||
|
|
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>
|
||
|
|
|
||
|
|
---
|
||
|
|
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";
|
||
|
|
};
|