Re: [PATCH V3 2/4] dma: add Qualcomm Technologies HIDMA management driver

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On 11/9/2015 1:25 PM, Rob Herring wrote:
On Sun, Nov 08, 2015 at 09:17:20PM -0500, Sinan Kaya wrote:
On 11/8/2015 12:08 AM, Timur Tabi wrote:

On 11/8/2015 12:08 AM, Timur Tabi wrote:
Sinan Kaya wrote:
+    val = val & ~(MAX_BUS_REQ_LEN_MASK << MAX_BUS_WR_REQ_BIT_POS);
+    val = val | (mgmtdev->max_write_request << MAX_BUS_WR_REQ_BIT_POS);
+    val = val & ~(MAX_BUS_REQ_LEN_MASK);
+    val = val | (mgmtdev->max_read_request);

val &= ~MAX_BUS_REQ_LEN_MASK << MAX_BUS_WR_REQ_BIT_POS;
val |= mgmtdev->max_write_request << MAX_BUS_WR_REQ_BIT_POS;
val &= ~MAX_BUS_REQ_LEN_MASK;
val |= mgmtdev->max_read_request;

+static const struct of_device_id hidma_mgmt_match[] = {
+    { .compatible = "qcom,hidma-mgmt", },
+    { .compatible = "qcom,hidma-mgmt-1.0", },
+    { .compatible = "qcom,hidma-mgmt-1.1", },
+    {},
+};

I thought Rob said that he did NOT want to use version numbers in
compatible strings.  And what's the difference between these three
versions anyway?


This was already discussed here.

https://lkml.org/lkml/2015/11/2/689

The agreement was to use

The suggestion...

compatible = "qcom,hidma-mgmt-1.1", "qcom,hidma-mgmt-1.0",
"qcom,hidma-mgmt";

I don't really want to see 3 generic-ish strings.

I'll be adding code for v1.1 specifically in the future.

Please drop "qcom,hidma-mgmt" altogether. It is already meaningless.
Then add the 1.1 compatible when you add the code for it. Hopefully you
all can decide on part number(s) by then.

Rob


OK. I'll only have "qcom,hidma-mgmt-1.0" for now.


--
Sinan Kaya
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
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