linux-kernel - [PATCH] arm64: dts: qcom: sc7180-trogdor: Fixup modem memory region

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Message-Id: <20221017182241.1086545-1-swboyd@chromium.org>
Date:   Mon, 17 Oct 2022 11:22:41 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     stable@...r.kernel.org
Cc:     Sibi Sankar <sibis@...eaurora.org>, linux-kernel@...r.kernel.org,
        patches@...ts.linux.dev, Evan Green <evgreen@...omium.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Alex Elder <elder@...aro.org>
Subject: [PATCH] arm64: dts: qcom: sc7180-trogdor: Fixup modem memory region

From: Sibi Sankar <sibis@...eaurora.org>

commit ef9a5d188d663753e73a3c8e8910ceab8e9305c4 upstream.

The modem firmware memory requirements vary between 32M/140M on
no-lte/lte skus respectively, so fixup the modem memory region
to reflect the requirements.

Reviewed-by: Evan Green <evgreen@...omium.org>
Signed-off-by: Sibi Sankar <sibis@...eaurora.org>
Link: https://lore.kernel.org/r/1602786476-27833-1-git-send-email-sibis@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Acked-by: Alex Elder <elder@...aro.org>
Signed-off-by: Stephen Boyd <swboyd@...omium.org>
---

This fixes boot of the modem on trogdor boards with the DTS from 5.10.y
stable tree. Without this patch I run into memory assignment errors and
then the modem fails to boot.

 arch/arm64/boot/dts/qcom/sc7180-trogdor-lte-sku.dtsi | 4 ++++
 arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi         | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-lte-sku.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-lte-sku.dtsi
index 44956e3165a1..469aad4e5948 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-lte-sku.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-lte-sku.dtsi
@@ -9,6 +9,10 @@ &ap_sar_sensor {
 	label = "proximity-wifi-lte";
 };
 
+&mpss_mem {
+	reg = <0x0 0x86000000 0x0 0x8c00000>;
+};
+
 &remoteproc_mpss {
 	firmware-name = "qcom/sc7180-trogdor/modem/mba.mbn",
 			"qcom/sc7180-trogdor/modem/qdsp6sw.mbn";
diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
index 5b2a616c6257..cb2c47f13a8a 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
@@ -39,7 +39,7 @@ atf_mem: memory@...00000 {
 		};
 
 		mpss_mem: memory@...00000 {
-			reg = <0x0 0x86000000 0x0 0x8c00000>;
+			reg = <0x0 0x86000000 0x0 0x2000000>;
 			no-map;
 		};
 

base-commit: 014862eecf03f58066a957027dde73cbecdf4395
-- 
https://chromeos.dev