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[PATCH v3 10/13] arm64: allwinner: a64: Increase the MMC max frequency

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The eMMC controller seem to have a maximum frequency of 200MHz, while the
regular MMC controllers are capped at 150MHz.

Since older SoCs cannot go that high, we cannot change the default maximum
frequency, but fortunately for us we have a property for that in the DT.

This also has the side effect of allowing to use the MMC HS200 and SD
SDR104 modes for the boards that support it (with either 1.2v or 1.8v IOs).

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arm64: allwinner: a64: Limit MMC0 and MMC1 rates to 150MHz

Trying to set the bus to 200MHz on MMC1 when doing SDIO is failing.
Allwinner sets the maximum for this bus to 150MHz, so enforce that limit.

This hasn't been tested with MMC0, but the documented limit is the same,
and I expect the behaviour to be the same.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 3 +++
 1 file changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 8e149498e096..b371fccc234b 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -332,6 +332,7 @@
 			resets = <&ccu RST_BUS_MMC0>;
 			reset-names = "ahb";
 			interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
+			max-frequency = <150000000>;
 			status = "disabled";
 			#address-cells = <1>;
 			#size-cells = <0>;
@@ -345,6 +346,7 @@
 			resets = <&ccu RST_BUS_MMC1>;
 			reset-names = "ahb";
 			interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>;
+			max-frequency = <150000000>;
 			status = "disabled";
 			#address-cells = <1>;
 			#size-cells = <0>;
@@ -358,6 +360,7 @@
 			resets = <&ccu RST_BUS_MMC2>;
 			reset-names = "ahb";
 			interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>;
+			max-frequency = <200000000>;
 			status = "disabled";
 			#address-cells = <1>;
 			#size-cells = <0>;
-- 
git-series 0.8.11

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[PATCH v3 0/13] arm64: allwinner: a64: Enable MMC support Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-16 18:10 +0100
  [PATCH v3 1/13] mmc: sunxi: Fix clock frequency change sequence Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-16 18:10 +0100
    Re: [PATCH v3 1/13] mmc: sunxi: Fix clock frequency change sequence Ulf Hansson <ulf.hansson@linaro.org> - 2017-01-24 09:20 +0100
      Re: [PATCH v3 1/13] mmc: sunxi: Fix clock frequency change sequence Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-25 09:30 +0100
  [PATCH v3 3/13] mmc: sunxi: Always set signal delay to 0 for A64 Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-16 18:10 +0100
    Re: [PATCH v3 3/13] mmc: sunxi: Always set signal delay to 0 for A64 Ulf Hansson <ulf.hansson@linaro.org> - 2017-01-24 09:20 +0100
      Re: [PATCH v3 3/13] mmc: sunxi: Always set signal delay to 0 for A64 Andre Przywara <andre.przywara@arm.com> - 2017-01-24 10:20 +0100
      Re: [PATCH v3 3/13] mmc: sunxi: Always set signal delay to 0 for A64 Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-25 10:20 +0100
  [PATCH v3 8/13] arm64: allwinner: a64: Add MMC nodes Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-16 18:10 +0100
    Re: [PATCH v3 8/13] arm64: allwinner: a64: Add MMC nodes Corentin Labbe <clabbe.montjoie@gmail.com> - 2017-01-16 20:40 +0100
      Re: [PATCH v3 8/13] arm64: allwinner: a64: Add MMC nodes Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-25 10:20 +0100
  [PATCH v3 6/13] mmc: sunxi: Add EMMC (MMC2) controller compatible Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-16 18:10 +0100
  [PATCH v3 10/13] arm64: allwinner: a64: Increase the MMC max frequency Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-16 18:10 +0100
  [PATCH v3 9/13] arm64: allwinner: a64: Add MMC pinctrl nodes Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-16 18:10 +0100
  [PATCH v3 4/13] mmc: sunxi: Enable the new timings for the A64 MMC controllers Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-16 18:10 +0100
  [PATCH v3 2/13] mmc: sunxi: Gate the clock when rate is 0 Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-16 18:10 +0100
    Re: [PATCH v3 2/13] mmc: sunxi: Gate the clock when rate is 0 Ulf Hansson <ulf.hansson@linaro.org> - 2017-01-24 09:20 +0100
  Re: [PATCH v3 0/13] arm64: allwinner: a64: Enable MMC support Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-01-23 12:00 +0100

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