rpms/kernel
3
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Add QCom patch to fix USB on Dragonboard

Browse Source
This commit is contained in:
Peter Robinson 2017-07-18 19:43:31 +01:00
parent b7ab4072a1
commit bcf363f5cd
2 changed files with 97 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel.spec
View File

@ -616,6 +616,9 @@ Patch311: arm-tegra-fix-gpu-iommu.patch
# https://www.spinics.net/lists/linux-arm-msm/msg28203.html
Patch312: qcom-display-iommu.patch
# https://patchwork.kernel.org/patch/9839803/
Patch313: qcom-Force-host-mode-for-USB-on-apq8016-sbc.patch
# 400 - IBM (ppc/s390x) patches
# 500 - Temp fixes/CVEs etc
@ -2190,6 +2193,7 @@ fi
* Tue Jul 18 2017 Peter Robinson <pbrobinson@fedoraproject.org>
- Add fix for Tegra GPU display with IOMMU
- Add QCom IOMMU for Dragonboard display
- Add QCom patch to fix USB on Dragonboard
* Tue Jul 18 2017 Laura Abbott <labbott@fedoraproject.org> - 4.13.0-0.rc1.git1.1
- Linux v4.13-rc1-24-gcb8c65ccff7f

93
qcom-Force-host-mode-for-USB-on-apq8016-sbc.patch Normal file
View File

@ -0,0 +1,93 @@
From patchwork Fri Jul 14 02:20:42 2017
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: [v2] arm64: dts: qcom: Force host mode for USB on apq8016-sbc
From: Stephen Boyd <sboyd@codeaurora.org>
X-Patchwork-Id: 9839803
Message-Id: <20170714022042.13886-1-sboyd@codeaurora.org>
To: Andy Gross <andy.gross@linaro.org>
Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, Rob Clark <robdclark@gmail.com>
Date: Thu, 13 Jul 2017 19:20:42 -0700
Commit ed75d6a96905 ("arm64: dts: qcom: Collapse usb support into
one node") breaks host mode support on apq8016-sbc boards. This
is because the mux driver (tc7usb40mu) hasn't been merged.
Without that driver, we can't toggle the GPIO going to the mux to
route out the D+/D- lines to the USB hub that's on the board.
One solution would be to totally revert this change, but that
opens us up to other problems when two USB drivers are operating
the same hardware block at the same time. Let's modify the DT so
that the USB controller is always in host mode and connected to
the hub so that things like USB keyboards and mouses work. This
is the mode that most people prefer anyway with these devices. We
also delete the usb-switch node because the binding was never
accepted upstream.
In the future, we can add muxing support and then update the DT
to support both modes at runtime. Patches to support this are
already on the mailing list.
Fixes: ed75d6a96905 ("arm64: dts: qcom: Collapse usb support into one node")
Reported-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
I noticed that I accidently removed the vbus notifier part of the phy.
Without it, we'll change settings that shouldn't changed. The thing
that we don't have is the ID pin on this board, not the vbus. That's
the only difference from v1.
arch/arm64/boot/dts/qcom/apq8016-sbc-pmic-pins.dtsi | 1 +
arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi | 13 ++++---------
2 files changed, 5 insertions(+), 9 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/apq8016-sbc-pmic-pins.dtsi b/arch/arm64/boot/dts/qcom/apq8016-sbc-pmic-pins.dtsi
index d94640812194..790b7775b901 100644
--- a/arch/arm64/boot/dts/qcom/apq8016-sbc-pmic-pins.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8016-sbc-pmic-pins.dtsi
@@ -17,6 +17,7 @@
function = PMIC_GPIO_FUNC_NORMAL;
power-source = <PM8916_GPIO_VPH>;
input-disable;
+ output-high;
};
};
diff --git a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
index bd310ac1967a..bb9e29e6b164 100644
--- a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
@@ -213,11 +213,14 @@
};
usb@78d9000 {
- extcon = <&usb_id>, <&usb_id>;
+ extcon = <&usb_id>;
status = "okay";
adp-disable;
hnp-disable;
srp-disable;
+ dr_mode = "host";
+ pinctrl-names = "default";
+ pinctrl-0 = <&usb_sw_sel_pm>;
ulpi {
phy {
v1p8-supply = <&pm8916_l7>;
@@ -342,14 +345,6 @@
pinctrl-0 = <&usb_id_default>;
};
- usb-switch {
- compatible = "toshiba,tc7usb40mu";
- switch-gpios = <&pm8916_gpios 4 GPIO_ACTIVE_HIGH>;
- extcon = <&usb_id>;
- pinctrl-names = "default";
- pinctrl-0 = <&usb_sw_sel_pm>;
- };
-
hdmi-out {
compatible = "hdmi-connector";
type = "a";