[PATCH 5/6] arm64: dts: qcom: msm8994-huawei-angler: Add sdhc{1,2} definitions

From: Petr Vorel <petr.vorel@gmail.com>
To: linux-arm-msm@vger.kernel.org
Cc: Petr Vorel <petr.vorel@gmail.com>,
	Konrad Dybcio <konradybcio@gmail.com>,
	Jean Thomas <virgule@jeanthomas.me>,
	Alexey Minnekhanov <alexeymin@postmarketos.org>,
	Andy Gross <agross@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Ulf Hansson <ulf.hansson@linaro.org>,
	Douglas Anderson <dianders@chromium.org>,
	Taniya Das <tdas@codeaurora.org>,
	linux-mmc@vger.kernel.org
Subject: [PATCH 5/6] arm64: dts: qcom: msm8994-huawei-angler: Add sdhc{1,2} definitions
Date: Fri, 14 Jan 2022 00:33:57 +0100	[thread overview]
Message-ID: <20220113233358.17972-6-petr.vorel@gmail.com> (raw)
In-Reply-To: <20220113233358.17972-1-petr.vorel@gmail.com>

Although downstream supports HS400, there are overclocking warnings when
using mmc-hs400-1_8v:

mmc0: Card appears overclocked; req 200000000 Hz, actual 384000000 Hz
mmc0: Card appears overclocked; req 200000000 Hz, actual 384000000 Hz
mmc0: Card appears overclocked; req 200000000 Hz, actual 384000000 Hz
mmc0: Card appears overclocked; req 400000000 Hz, actual 768000000 Hz
mmc0: Card appears overclocked; req 400000000 Hz, actual 768000000 Hz
mmc0: new HS400 MMC card at address 0001

Using HS200 (i.e. mmc-hs200-1_8v or mmc-ddr-1_8v) would reduce them:

mmc0: Card appears overclocked; req 200000000 Hz, actual 384000000 Hz
mmc0: Card appears overclocked; req 200000000 Hz, actual 384000000 Hz
mmc0: new HS200 MMC card at address 0001

But as the problem is probably elsewhere (bullhead behaves the same),
keep mmc-hs400-1_8v.

Angler does not have SD card, thus explicitly disable sdhc2.

Signed-off-by: Petr Vorel <petr.vorel@gmail.com>
---
 .../dts/qcom/msm8994-huawei-angler-rev-101.dts   | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8994-huawei-angler-rev-101.dts b/arch/arm64/boot/dts/qcom/msm8994-huawei-angler-rev-101.dts
index 0e3dd48f0dbf..5ce3dc169bb4 100644
--- a/arch/arm64/boot/dts/qcom/msm8994-huawei-angler-rev-101.dts
+++ b/arch/arm64/boot/dts/qcom/msm8994-huawei-angler-rev-101.dts
@@ -7,6 +7,7 @@
 /dts-v1/;
 
 #include "msm8994.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 /* Angler's firmware does not report where the memory is allocated */
 /delete-node/ &cont_splash_mem;
@@ -41,3 +42,18 @@ serial@f991e000 {
 &tlmm {
 	gpio-reserved-ranges = <85 4>;
 };
+
+/*
+ * Although downstream supports also HS400 there are fewer overclocking
+ * warnings when used DDR, also LK bootloader reports DDR mode.
+ */
+&sdhc1 {
+	status = "okay";
+
+	mmc-hs400-1_8v;
+};
+
+/* Angler does not have SD card */
+&sdhc2 {
+	status = "disabled";
+};
-- 
2.34.1

