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From: Douglas Anderson <dianders@chromium.org>
To: Heiko Stuebner <heiko@sntech.de>
Cc: Shawn Lin <shawn.lin@rock-chips.com>,
	linux-rockchip@lists.infradead.org, briannorris@chromium.org,
	mka@chromium.org, amstan@chromium.org,
	Douglas Anderson <dianders@chromium.org>,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dts: rockchip: Make rk3288-veyron-minnie run at hs200
Date: Fri,  3 May 2019 16:41:42 -0700	[thread overview]
Message-ID: <20190503234142.228982-1-dianders@chromium.org> (raw)

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@chromium.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 468a1818545d..ce57881625ec 100644
--- a/arch/arm/boot/dts/rk3288-veyron-minnie.dts
+++ b/arch/arm/boot/dts/rk3288-veyron-minnie.dts
@@ -90,10 +90,6 @@
 	pwm-off-delay-ms = <200>;
 };
 
-&emmc {
-	/delete-property/mmc-hs200-1_8v;
-};
-
 &gpio_keys {
 	pinctrl-0 = <&pwr_key_l &ap_lid_int_l &volum_down_l &volum_up_l>;
 
-- 
2.21.0.1020.gf2820cf01a-goog


WARNING: multiple messages have this Message-ID (diff)
From: Douglas Anderson <dianders@chromium.org>
To: Heiko Stuebner <heiko@sntech.de>
Cc: Mark Rutland <mark.rutland@arm.com>,
	devicetree@vger.kernel.org, amstan@chromium.org,
	Shawn Lin <shawn.lin@rock-chips.com>,
	briannorris@chromium.org,
	Douglas Anderson <dianders@chromium.org>,
	Rob Herring <robh+dt@kernel.org>,
	linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org,
	mka@chromium.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: dts: rockchip: Make rk3288-veyron-minnie run at hs200
Date: Fri,  3 May 2019 16:41:42 -0700	[thread overview]
Message-ID: <20190503234142.228982-1-dianders@chromium.org> (raw)

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@chromium.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 468a1818545d..ce57881625ec 100644
--- a/arch/arm/boot/dts/rk3288-veyron-minnie.dts
+++ b/arch/arm/boot/dts/rk3288-veyron-minnie.dts
@@ -90,10 +90,6 @@
 	pwm-off-delay-ms = <200>;
 };
 
-&emmc {
-	/delete-property/mmc-hs200-1_8v;
-};
-
 &gpio_keys {
 	pinctrl-0 = <&pwr_key_l &ap_lid_int_l &volum_down_l &volum_up_l>;
 
-- 
2.21.0.1020.gf2820cf01a-goog


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             reply	other threads:[~2019-05-03 23:41 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-03 23:41 Douglas Anderson [this message]
2019-05-03 23:41 ` [PATCH] ARM: dts: rockchip: Make rk3288-veyron-minnie run at hs200 Douglas Anderson
2019-05-07 12:03 ` Heiko Stuebner
2019-05-07 12:03   ` Heiko Stuebner

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