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authorPawel Dembicki <paweldembicki@gmail.com>2020-11-04 10:16:31 +0100
committerPetr Štetiar <ynezz@true.cz>2020-11-23 22:53:15 +0100
commitcdff729b27592b1761059886c40f0204507000d1 (patch)
treec08622ee6f464b368da457707341035454520cb6 /target/linux/layerscape/patches-5.4
parent4dc27a026b7e308477adecbdf8e6da58e1d57716 (diff)
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layerscape: enable spi-uart in LS1012A-FRDM
This patch add missing support of SC16IS740 serial controller, installed on LS1012A-FRDM board. It was required to change RCW bits, because SPI was disabled by default. Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Diffstat (limited to 'target/linux/layerscape/patches-5.4')
-rw-r--r--target/linux/layerscape/patches-5.4/902-layerscape_improve_support_of_LS1012A-FRDM.patch58
1 files changed, 58 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/902-layerscape_improve_support_of_LS1012A-FRDM.patch b/target/linux/layerscape/patches-5.4/902-layerscape_improve_support_of_LS1012A-FRDM.patch
new file mode 100644
index 0000000000..62edf43a35
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/902-layerscape_improve_support_of_LS1012A-FRDM.patch
@@ -0,0 +1,58 @@
+From 12de4b5e7cbcd193d5abb753ca511fe8f2236846 Mon Sep 17 00:00:00 2001
+From: Pawel Dembicki <paweldembicki@gmail.com>
+Date: Fri, 13 Nov 2020 07:30:03 +0100
+Subject: [PATCH 2/2] arm64: dts: fsl-ls1012a-frdm: add spi-uart device
+
+This patch adds spi-uart controller to LS1012A-FRDM board dts.
+Device is equipped in SC16IS740 from NXP.
+
+Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
+---
+ .../boot/dts/freescale/fsl-ls1012a-frdm.dts | 21 +++++++++++++++++++
+ 1 file changed, 21 insertions(+)
+
+--- a/arch/arm64/boot/dts/freescale/fsl-ls1012a-frdm.dts
++++ b/arch/arm64/boot/dts/freescale/fsl-ls1012a-frdm.dts
+@@ -7,6 +7,7 @@
+ */
+ /dts-v1/;
+
++#include <dt-bindings/interrupt-controller/irq.h>
+ #include "fsl-ls1012a.dtsi"
+
+ / {
+@@ -16,6 +17,7 @@
+ aliases {
+ ethernet0 = &pfe_mac0;
+ ethernet1 = &pfe_mac1;
++ serial0 = &duart0;
+ };
+
+ sys_mclk: clock-mclk {
+@@ -61,6 +63,26 @@
+ };
+ };
+ };
++
++&dspi {
++ status = "okay";
++ bus-num = <0>;
++
++ serial@0 {
++ reg = <0>;
++ compatible = "nxp,sc16is740";
++ spi-max-frequency = <4000000>;
++ clocks = <&sc16is7xx_clk>;
++ interrupt-parent = <&gpio1>;
++ interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
++
++ sc16is7xx_clk: sc16is7xx_clk {
++ compatible = "fixed-clock";
++ #clock-cells = <0>;
++ clock-frequency = <24000000>;
++ };
++ };
++};
+
+ &duart0 {
+ status = "okay";