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Message-Id: <20190805124925.088251923@linuxfoundation.org>
Date:   Mon,  5 Aug 2019 15:02:28 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Douglas Anderson <dianders@...omium.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 02/42] ARM: dts: rockchip: Make rk3288-veyron-minnie run at hs200

[ Upstream commit 1c0479023412ab7834f2e98b796eb0d8c627cd62 ]

As some point hs200 was failing on rk3288-veyron-minnie.  See commit
984926781122 ("ARM: dts: rockchip: temporarily remove emmc hs200 speed
from rk3288 minnie").  Although I didn't track down exactly when it
started working, it seems to work OK now, so let's turn it back on.

To test this, I booted from SD card and then used this script to
stress the enumeration process after fixing a memory leak [1]:
  cd /sys/bus/platform/drivers/dwmmc_rockchip
  for i in $(seq 1 3000); do
    echo "========================" $i
    echo ff0f0000.dwmmc > unbind
    sleep .5
    echo ff0f0000.dwmmc > bind
    while true; do
      if [ -e /dev/mmcblk2 ]; then
        break;
      fi
      sleep .1
    done
  done

It worked fine.

[1] https://lkml.kernel.org/r/20190503233526.226272-1-dianders@chromium.org

Signed-off-by: Douglas Anderson <dianders@...omium.org>
Signed-off-by: Heiko Stuebner <heiko@...ech.de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm/boot/dts/rk3288-veyron-minnie.dts | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/arm/boot/dts/rk3288-veyron-minnie.dts b/arch/arm/boot/dts/rk3288-veyron-minnie.dts
index f72d616d1bf8d..9647d9b6b299c 100644
--- a/arch/arm/boot/dts/rk3288-veyron-minnie.dts
+++ b/arch/arm/boot/dts/rk3288-veyron-minnie.dts
@@ -125,10 +125,6 @@
 	power-supply = <&backlight_regulator>;
 };
 
-&emmc {
-	/delete-property/mmc-hs200-1_8v;
-};
-
 &gpio_keys {
 	pinctrl-0 = <&pwr_key_l &ap_lid_int_l &volum_down_l &volum_up_l>;
 
-- 
2.20.1



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