lkml.org 
[lkml]   [2021]   [Jan]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 12/18] arm64: dts: qcom: msm8994-octagon: Configure Lattice iCE40 FPGA
Date
From: Gustave Monce <gustave.monce@outlook.com>

Octagon devices have a Lattice iCE40 FPGA connected over SPI.
Configure it.

Signed-off-by: Gustave Monce <gustave.monce@outlook.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
---
.../dts/qcom/msm8994-msft-lumia-octagon.dtsi | 21 +++++++++++++++++++
1 file changed, 21 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi b/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi
index 004a42261cef..73af5265df9b 100644
--- a/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8994-msft-lumia-octagon.dtsi
@@ -304,6 +304,27 @@ &blsp1_uart2 {
status = "okay";
};

+&blsp2_spi4 {
+ status = "okay";
+
+ /*
+ * This device is a Lattice UC120 USB-C PD PHY.
+ * It is actually a Lattice iCE40 FPGA pre-programmed by
+ * the device firmware with a specific bitstream
+ * enabling USB Type C PHY functionality.
+ * Communication is done via a proprietary protocol over SPI.
+ *
+ * TODO: Once a proper driver is available, replace this.
+ */
+ uc120: ice5lp2k@0 {
+ compatible = "lattice,ice40-fpga-mgr";
+ reg = <0>;
+ spi-max-frequency = <5000000>;
+ cdone-gpios = <&tlmm 95 GPIO_ACTIVE_HIGH>;
+ reset-gpios = <&pmi8994_gpios 4 GPIO_ACTIVE_LOW>;
+ };
+};
+
&blsp2_uart2 {
status = "okay";

--
2.30.0
\
 
 \ /
  Last update: 2021-01-31 02:45    [W:0.095 / U:0.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site