+++ /dev/null
-From 37f172b47784a4debc62cb71974eac303031e69c Mon Sep 17 00:00:00 2001
-From: pjx3 <pjx3@users.noreply.github.com>
-Date: Sun, 8 Aug 2021 20:09:46 +0100
-Subject: [PATCH] overlays: Add midi-uart{2345}-overlay.dts
-
-Added overlays for enabling MIDI baudrates on additional UARTs
-
-Signed-off-by: Pete Marshall <petemarshall303@gmail.com>
----
- arch/arm/boot/dts/overlays/Makefile | 4 ++
- arch/arm/boot/dts/overlays/README | 28 ++++++++++++++
- .../boot/dts/overlays/midi-uart2-overlay.dts | 37 ++++++++++++++++++
- .../boot/dts/overlays/midi-uart3-overlay.dts | 38 +++++++++++++++++++
- .../boot/dts/overlays/midi-uart4-overlay.dts | 38 +++++++++++++++++++
- .../boot/dts/overlays/midi-uart5-overlay.dts | 38 +++++++++++++++++++
- 6 files changed, 183 insertions(+)
- create mode 100644 arch/arm/boot/dts/overlays/midi-uart2-overlay.dts
- create mode 100644 arch/arm/boot/dts/overlays/midi-uart3-overlay.dts
- create mode 100644 arch/arm/boot/dts/overlays/midi-uart4-overlay.dts
- create mode 100644 arch/arm/boot/dts/overlays/midi-uart5-overlay.dts
-
---- a/arch/arm/boot/dts/overlays/Makefile
-+++ b/arch/arm/boot/dts/overlays/Makefile
-@@ -123,6 +123,10 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
- merus-amp.dtbo \
- midi-uart0.dtbo \
- midi-uart1.dtbo \
-+ midi-uart2.dtbo \
-+ midi-uart3.dtbo \
-+ midi-uart4.dtbo \
-+ midi-uart5.dtbo \
- minipitft13.dtbo \
- miniuart-bt.dtbo \
- mmc.dtbo \
---- a/arch/arm/boot/dts/overlays/README
-+++ b/arch/arm/boot/dts/overlays/README
-@@ -2088,6 +2088,34 @@ Load: dtoverlay=midi-uart1
- Params: <None>
-
-
-+Name: midi-uart2
-+Info: Configures UART2 (ttyAMA1) so that a requested 38.4kbaud actually gets
-+ 31.25kbaud, the frequency required for MIDI
-+Load: dtoverlay=midi-uart2
-+Params: <None>
-+
-+
-+Name: midi-uart3
-+Info: Configures UART3 (ttyAMA2) so that a requested 38.4kbaud actually gets
-+ 31.25kbaud, the frequency required for MIDI
-+Load: dtoverlay=midi-uart3
-+Params: <None>
-+
-+
-+Name: midi-uart4
-+Info: Configures UART4 (ttyAMA3) so that a requested 38.4kbaud actually gets
-+ 31.25kbaud, the frequency required for MIDI
-+Load: dtoverlay=midi-uart4
-+Params: <None>
-+
-+
-+Name: midi-uart5
-+Info: Configures UART5 (ttyAMA4) so that a requested 38.4kbaud actually gets
-+ 31.25kbaud, the frequency required for MIDI
-+Load: dtoverlay=midi-uart5
-+Params: <None>
-+
-+
- Name: minipitft13
- Info: Overlay for AdaFruit Mini Pi 1.3" TFT via SPI using fbtft driver.
- Load: dtoverlay=minipitft13,<param>=<val>
---- /dev/null
-+++ b/arch/arm/boot/dts/overlays/midi-uart2-overlay.dts
-@@ -0,0 +1,37 @@
-+/dts-v1/;
-+/plugin/;
-+
-+#include <dt-bindings/clock/bcm2835.h>
-+
-+/*
-+ * Fake a higher clock rate to get a larger divisor, and thereby a lower
-+ * baudrate. The real clock is 48MHz, which we scale so that requesting
-+ * 38.4kHz results in an actual 31.25kHz.
-+ *
-+ * 48000000*38400/31250 = 58982400
-+ */
-+
-+/{
-+ compatible = "brcm,bcm2835";
-+
-+ fragment@0 {
-+ target-path = "/";
-+ __overlay__ {
-+ midi_clk: midi_clk2 {
-+ compatible = "fixed-clock";
-+ #clock-cells = <0>;
-+ clock-output-names = "uart2_pclk";
-+ clock-frequency = <58982400>;
-+ };
-+ };
-+ };
-+
-+ fragment@1 {
-+ target = <&uart2>;
-+ __overlay__ {
-+ clocks = <&midi_clk>,
-+ <&clocks BCM2835_CLOCK_VPU>;
-+ };
-+ };
-+};
-+
---- /dev/null
-+++ b/arch/arm/boot/dts/overlays/midi-uart3-overlay.dts
-@@ -0,0 +1,38 @@
-+/dts-v1/;
-+/plugin/;
-+
-+#include <dt-bindings/clock/bcm2835.h>
-+
-+/*
-+ * Fake a higher clock rate to get a larger divisor, and thereby a lower
-+ * baudrate. The real clock is 48MHz, which we scale so that requesting
-+ * 38.4kHz results in an actual 31.25kHz.
-+ *
-+ * 48000000*38400/31250 = 58982400
-+ */
-+
-+/{
-+ compatible = "brcm,bcm2835";
-+
-+ fragment@0 {
-+ target-path = "/";
-+ __overlay__ {
-+ midi_clk: midi_clk3 {
-+ compatible = "fixed-clock";
-+ #clock-cells = <0>;
-+ clock-output-names = "uart3_pclk";
-+ clock-frequency = <58982400>;
-+ };
-+ };
-+ };
-+
-+ fragment@1 {
-+ target = <&uart3>;
-+ __overlay__ {
-+ clocks = <&midi_clk>,
-+ <&clocks BCM2835_CLOCK_VPU>;
-+ };
-+ };
-+};
-+
-+
---- /dev/null
-+++ b/arch/arm/boot/dts/overlays/midi-uart4-overlay.dts
-@@ -0,0 +1,38 @@
-+/dts-v1/;
-+/plugin/;
-+
-+#include <dt-bindings/clock/bcm2835.h>
-+
-+/*
-+ * Fake a higher clock rate to get a larger divisor, and thereby a lower
-+ * baudrate. The real clock is 48MHz, which we scale so that requesting
-+ * 38.4kHz results in an actual 31.25kHz.
-+ *
-+ * 48000000*38400/31250 = 58982400
-+ */
-+
-+/{
-+ compatible = "brcm,bcm2835";
-+
-+ fragment@0 {
-+ target-path = "/";
-+ __overlay__ {
-+ midi_clk: midi_clk4 {
-+ compatible = "fixed-clock";
-+ #clock-cells = <0>;
-+ clock-output-names = "uart4_pclk";
-+ clock-frequency = <58982400>;
-+ };
-+ };
-+ };
-+
-+ fragment@1 {
-+ target = <&uart4>;
-+ __overlay__ {
-+ clocks = <&midi_clk>,
-+ <&clocks BCM2835_CLOCK_VPU>;
-+ };
-+ };
-+};
-+
-+
---- /dev/null
-+++ b/arch/arm/boot/dts/overlays/midi-uart5-overlay.dts
-@@ -0,0 +1,38 @@
-+/dts-v1/;
-+/plugin/;
-+
-+#include <dt-bindings/clock/bcm2835.h>
-+
-+/*
-+ * Fake a higher clock rate to get a larger divisor, and thereby a lower
-+ * baudrate. The real clock is 48MHz, which we scale so that requesting
-+ * 38.4kHz results in an actual 31.25kHz.
-+ *
-+ * 48000000*38400/31250 = 58982400
-+ */
-+
-+/{
-+ compatible = "brcm,bcm2835";
-+
-+ fragment@0 {
-+ target-path = "/";
-+ __overlay__ {
-+ midi_clk: midi_clk5 {
-+ compatible = "fixed-clock";
-+ #clock-cells = <0>;
-+ clock-output-names = "uart5_pclk";
-+ clock-frequency = <58982400>;
-+ };
-+ };
-+ };
-+
-+ fragment@1 {
-+ target = <&uart5>;
-+ __overlay__ {
-+ clocks = <&midi_clk>,
-+ <&clocks BCM2835_CLOCK_VPU>;
-+ };
-+ };
-+};
-+
-+
projects / openwrt / staging / chunkeey.git / blobdiff