From 748e4f3d702def1a4bff191e0cf93b6a05340f01 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:41:34 +0000
Subject: [PATCH] add gpio led uart
---
kernel/Documentation/devicetree/bindings/spi/fsl-spi.txt | 10 +++++++---
1 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/kernel/Documentation/devicetree/bindings/spi/fsl-spi.txt b/kernel/Documentation/devicetree/bindings/spi/fsl-spi.txt
index 8854004..0654380 100644
--- a/kernel/Documentation/devicetree/bindings/spi/fsl-spi.txt
+++ b/kernel/Documentation/devicetree/bindings/spi/fsl-spi.txt
@@ -15,9 +15,13 @@
- clock-frequency : input clock frequency to non FSL_SOC cores
Optional properties:
-- gpios : specifies the gpio pins to be used for chipselects.
+- cs-gpios : specifies the gpio pins to be used for chipselects.
The gpios will be referred to as reg = <index> in the SPI child nodes.
If unspecified, a single SPI device without a chip select can be used.
+- fsl,spisel_boot : for the MPC8306 and MPC8309, specifies that the
+ SPISEL_BOOT signal is used as chip select for a slave device. Use
+ reg = <number of gpios> in the corresponding child node, i.e. 0 if
+ the cs-gpios property is not present.
Example:
spi@4c0 {
@@ -27,8 +31,8 @@
interrupts = <82 0>;
interrupt-parent = <700>;
mode = "cpu";
- gpios = <&gpio 18 1 // device reg=<0>
- &gpio 19 1>; // device reg=<1>
+ cs-gpios = <&gpio 18 1 // device reg=<0>
+ &gpio 19 1>; // device reg=<1>
};
--
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