<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p><br>
</p>
<div class="moz-cite-prefix">On 10/17/2024 12:40 PM, Krzysztof
Kozlowski wrote:<br>
</div>
<blockquote type="cite"
cite="mid:658c19c7-9eeb-4329-aa96-a4a9b09d7117@kernel.org">
<pre class="moz-quote-pre" wrap="">On 16/10/2024 16:35, Bjorn Andersson wrote:
</pre>
<blockquote type="cite">
<blockquote type="cite">
<blockquote type="cite">
<pre class="moz-quote-pre" wrap="">@@ -1064,7 +1064,7 @@
};
gpi_dma0: dma-controller@900000 {
- #dma-cells = <3>;
+ #dma-cells = <4>;
compatible = "qcom,sc7280-gpi-dma", "qcom,sm6350-gpi-dma";
reg = <0 0x00900000 0 0x60000>;
interrupts = <GIC_SPI 244 IRQ_TYPE_LEVEL_HIGH>,
@@ -1114,8 +1114,8 @@
"qup-memory";
power-domains = <&rpmhpd SC7280_CX>;
required-opps = <&rpmhpd_opp_low_svs>;
- dmas = <&gpi_dma0 0 0 QCOM_GPI_I2C>,
- <&gpi_dma0 1 0 QCOM_GPI_I2C>;
+ dmas = <&gpi_dma0 0 0 QCOM_GPI_I2C 64>,
+ <&gpi_dma0 1 0 QCOM_GPI_I2C 64>;
</pre>
</blockquote>
<pre class="moz-quote-pre" wrap="">
So everywhere is 64, thus this is fixed. Deduce it from the compatible
</pre>
</blockquote>
<pre class="moz-quote-pre" wrap="">
If I understand correctly, it's a software tunable property, used to
balance how many TRE elements that should be preallocated.
If so, it would not be a property of the hardware/compatible, but rather
a result of profiling and a balance between memory "waste" and
performance.
</pre>
</blockquote>
<pre class="moz-quote-pre" wrap="">
In such case I would prefer it being runtime-calculated by the driver,
based on frequency or expected bandwidth.
And in any case if this is about to stay, having here default values
means all upstream users don't need it. What's not upstream, does not
exist in such context. We don't add features which are not used by upstream.
Best regards,
Krzysztof</pre>
</blockquote>
<p><br>
</p>
<p>Thanks <span style="white-space: pre-wrap">Krzysztof and </span><span
style="white-space: pre-wrap">Bjorn for the review comments.</span></p>
<p><span style="white-space: pre-wrap">I have reverted the changes of supporting channels tre size from DT and will make use of existing channel tre size defined in GPI driver which is 64.</span></p>
<p><span style="white-space: pre-wrap">Regards,</span></p>
<p><span style="white-space: pre-wrap">JyothiKumar. </span></p>
<blockquote type="cite"
cite="mid:658c19c7-9eeb-4329-aa96-a4a9b09d7117@kernel.org">
<pre class="moz-quote-pre" wrap="">
</pre>
</blockquote>
</body>
</html>