diff mbox series

[v3] arm64: dts: qcom: sc7280: only enable IPA for boards with a modem

Message ID 20221224002126.1518552-1-elder@linaro.org (mailing list archive)
State Accepted
Headers show
Series [v3] arm64: dts: qcom: sc7280: only enable IPA for boards with a modem | expand

Commit Message

Alex Elder Dec. 24, 2022, 12:21 a.m. UTC 
IPA is only needed on a platform if it includes a modem, and not all
SC7280 SoC variants do.  The file "sc7280-herobrine-lte-sku.dtsi" is
used to encapsulate definitions related to Chrome OS SC7280 devices
where a modem is present, and that's the proper place for the IPA
node to be enabled.

Currently IPA is enabled in "sc7280-idp.dtsi", which is included by
DTS files for Qualcomm reference platforms (all of which include the
modem).  That also includes "sc7280-herobrine-lte-sku.dtsi", so
enabling IPA there would make it unnecessary for "sc7280-idp.dtsi"
to enable it.

The only other place IPA is enabled is "sc7280-qcard.dtsi".
That file is included only by "sc7280-herobrine.dtsi", which
is (eventually) included only by these top-level DTS files:
  sc7280-herobrine-crd.dts
  sc7280-herobrine-herobrine-r1.dts
  sc7280-herobrine-evoker.dts
  sc7280-herobrine-evoker-lte.dts
  sc7280-herobrine-villager-r0.dts
  sc7280-herobrine-villager-r1.dts
  sc7280-herobrine-villager-r1-lte.dts
All of but two of these include "sc7280-herobrine-lte-sku.dtsi", and
for those cases, enabling IPA there means there is no need for it to
be enabled in "sc7280-qcard.dtsi".

The two remaining cases will no longer enable IPA as a result of
this change:
  sc7280-herobrine-evoker.dts
  sc7280-herobrine-villager-r1.dts
Both of these have "lte" counterparts, and are meant to represent
board variants that do *not* have a modem.

This is exactly the desired configuration.

Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Sibi Sankar <quic_sibis@quicinc.com>
Tested-by: Sibi Sankar <quic_sibis@quicinc.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
---
v3:  Rewrote the subject line as suggested by Matthias
v2:  Moved &ipa node update earlier, and status property to end

 arch/arm64/boot/dts/qcom/sc7280-herobrine-lte-sku.dtsi | 5 +++++
 arch/arm64/boot/dts/qcom/sc7280-idp.dtsi               | 5 -----
 arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi             | 5 -----
 3 files changed, 5 insertions(+), 10 deletions(-)

Comments

Bjorn Andersson Dec. 29, 2022, 5:23 p.m. UTC | #1 
On Fri, 23 Dec 2022 18:21:26 -0600, Alex Elder wrote:
> IPA is only needed on a platform if it includes a modem, and not all
> SC7280 SoC variants do.  The file "sc7280-herobrine-lte-sku.dtsi" is
> used to encapsulate definitions related to Chrome OS SC7280 devices
> where a modem is present, and that's the proper place for the IPA
> node to be enabled.
> 
> Currently IPA is enabled in "sc7280-idp.dtsi", which is included by
> DTS files for Qualcomm reference platforms (all of which include the
> modem).  That also includes "sc7280-herobrine-lte-sku.dtsi", so
> enabling IPA there would make it unnecessary for "sc7280-idp.dtsi"
> to enable it.
> 
> [...]

Applied, thanks!

[1/1] arm64: dts: qcom: sc7280: only enable IPA for boards with a modem
      commit: 9472edb3e7ea08ada9d19a9cfc1bee7de6edee75

Best regards,
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine-lte-sku.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine-lte-sku.dtsi
index ad66e5e9db4ed..c5309b25d0860 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-herobrine-lte-sku.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine-lte-sku.dtsi
@@ -20,6 +20,11 @@  mba_mem: memory@9c700000 {
 	};
 };
 
+&ipa {
+	modem-init;
+	status = "okay";
+};
+
 &remoteproc_mpss {
 	compatible = "qcom,sc7280-mss-pil";
 	iommus = <&apps_smmu 0x124 0x0>, <&apps_smmu 0x488 0x7>;
diff --git a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
index f7efb9966afd1..0ddbe7f732bd9 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280-idp.dtsi
@@ -376,11 +376,6 @@  &gpi_dma1 {
 	status = "okay";
 };
 
-&ipa {
-	status = "okay";
-	modem-init;
-};
-
 &lpass_cpu {
 	status = "okay";
 
diff --git a/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi b/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi
index df49564ae6dc1..cd6ee84b36fd4 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280-qcard.dtsi
@@ -336,11 +336,6 @@  vreg_bob: bob {
 
 /* ADDITIONS TO NODES DEFINED IN PARENT DEVICE TREE FILES */
 
-&ipa {
-	status = "okay";
-	modem-init;
-};
-
 &lpass_va_macro {
 	vdd-micb-supply = <&vreg_bob>;
 };