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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";
};
};
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