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Subject[PATCH 2/6] arm64: dts: meson: libretech-cc: switch eMMC to 1.8v
Date
While some 3.3v eMMC 4.0 are available from libretech, Only the 1.8v 5.0
modules are recommended and supported for the aml-s905x-cc.

the 1.8v is provided by LDOs on the eMMC card, from vcc 3.3v

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
---
.../boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts
index d4d5e3e5439d..b0f22cdb586c 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts
@@ -115,11 +115,13 @@
regulator-max-microvolt = <1800000>;
};

+ /* This is provided by LDOs on the eMMC daugther card */
vddio_boot: regulator-vddio_boot {
compatible = "regulator-fixed";
regulator-name = "VDDIO_BOOT";
- regulator-min-microvolt = <3300000>;
- regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ vin-supply = <&vcc_3v3>;
};
};

@@ -253,8 +255,9 @@

bus-width = <8>;
cap-mmc-highspeed;
- mmc-ddr-3_3v;
- max-frequency = <50000000>;
+ mmc-ddr-1_8v;
+ mmc-hs200-1_8v;
+ max-frequency = <200000000>;
disable-wp;

mmc-pwrseq = <&emmc_pwrseq>;
--
2.20.1
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