linux-kernel - [PATCH v2 2/2] arm64: dts: qcom: sdm850-yoga: Enable IPA

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Date:   Fri, 12 Mar 2021 15:43:10 -0800
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Doug Anderson <dianders@...omium.org>
Subject: [PATCH v2 2/2] arm64: dts: qcom: sdm850-yoga: Enable IPA

The ipa_fws.elf found in the Lenovo Yoga C630 isn't packed like the one
found in e.g. the MTP, so it doesn't fit in the "standard" ipa_fws
memory region. Further more, authentication of ipa_fws at the usual base
address is rejected by the Peripheral Authentication Service (in
TrustZone), so some shuffling and trial and error was used to come up
with acceptable regions.

With this in order, enable the IPA device.

Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
---

Changes since v1:
- None

 .../boot/dts/qcom/sdm850-lenovo-yoga-c630.dts | 26 +++++++++----------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
index 7d84f8a2db4d..f40fcd5d08d3 100644
--- a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
+++ b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
@@ -73,28 +73,23 @@ rmtfs_mem: memory@...00000 {
 			qcom,vmid = <15>;
 		};
 
-		ipa_fw_mem: memory@...00000 {
-			reg = <0 0x8c400000 0 0x10000>;
+		wlan_msa_mem: memory@...00000 {
+			reg = <0 0x8c400000 0 0x100000>;
 			no-map;
 		};
 
-		ipa_gsi_mem: memory@...10000 {
-			reg = <0 0x8c410000 0 0x5000>;
+		gpu_mem: memory@...15000 {
+			reg = <0 0x8c515000 0 0x2000>;
 			no-map;
 		};
 
-		gpu_mem: memory@...15000 {
-			reg = <0 0x8c415000 0 0x2000>;
+		ipa_fw_mem: memory@...17000 {
+			reg = <0 0x8c517000 0 0x5a000>;
 			no-map;
 		};
 
-		adsp_mem: memory@...00000 {
-			reg = <0 0x8c500000 0 0x1a00000>;
-			no-map;
-		};
-
-		wlan_msa_mem: memory@...00000 {
-			reg = <0 0x8df00000 0 0x100000>;
+		adsp_mem: memory@...00000 {
+			reg = <0 0x8c600000 0 0x1a00000>;
 			no-map;
 		};
 
@@ -486,6 +481,11 @@ ecsh: hid@5c {
 	};
 };
 
+&ipa {
+	status = "okay";
+	memory-region = <&ipa_fw_mem>;
+};
+
 &mdss {
 	status = "okay";
 };
-- 
2.29.2