39 lines
1.3 KiB
Diff
39 lines
1.3 KiB
Diff
|
From 48bf88ebb1abf55168f636d7a6edf2ca79be13c6 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Phil Elwell <phil@raspberrypi.com>
|
||
|
|
Date: Wed, 6 May 2020 14:25:20 +0100
|
||
|
|
Subject: [PATCH] overlays: sc16is752-spi1: Add xtal parameter
|
||
|
|
|
||
|
|
The other sc16is75x overlays have an xtal parameter to allow a
|
||
|
|
different crystal frequency to be specified, but sc16is752-spi1
|
||
|
|
doesn't. Fix this omission.
|
||
|
|
|
||
|
|
See: https://www.raspberrypi.org/forums/viewtopic.php?f=107&t=273234
|
||
|
|
|
||
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
|
||
|
|
---
|
||
|
|
arch/arm/boot/dts/overlays/README | 1 +
|
||
|
|
arch/arm/boot/dts/overlays/sc16is752-spi1-overlay.dts | 3 ++-
|
||
|
|
2 files changed, 3 insertions(+), 1 deletion(-)
|
||
|
|
|
||
|
|
--- a/arch/arm/boot/dts/overlays/README
|
||
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
||
|
|
@@ -2114,6 +2114,7 @@ Info: Overlay for the NXP SC16IS752 Du
|
||
|
|
|
||
|
|
Load: dtoverlay=sc16is752-spi1,<param>=<val>
|
||
|
|
Params: int_pin GPIO used for IRQ (default 24)
|
||
|
|
+ xtal On-board crystal frequency (default 14745600)
|
||
|
|
|
||
|
|
|
||
|
|
Name: sdhost
|
||
|
|
--- a/arch/arm/boot/dts/overlays/sc16is752-spi1-overlay.dts
|
||
|
|
+++ b/arch/arm/boot/dts/overlays/sc16is752-spi1-overlay.dts
|
||
|
|
@@ -56,6 +56,7 @@
|
||
|
|
};
|
||
|
|
|
||
|
|
__overrides__ {
|
||
|
|
- int_pin = <&sc16is752>,"interrupts:0";
|
||
|
|
+ int_pin = <&sc16is752>,"interrupts:0";
|
||
|
|
+ xtal = <&sc16is752_clk>,"clock-frequency:0";
|
||
|
|
};
|
||
|
|
};
|