ARM: dts: meson: Set the fifo-size of uart_A to 128 bytes

The first UART controller in the "Everything-Else" power domain is
called uart_A. Unlike all other UARTs (which use a 64 byte fifo-size in
hardware) uart_A has a fifo-size of 128 bytes. This UART controller is
typically used for Bluetooth HCI.
The fifo-size of 128 bytes is valid from all SoCs from Meson6 (or
possibly even earlier) all the way up to the latest 64-bit ones.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20210604170844.2201229-1-martin.blumenstingl@googlemail.com

diff --git a/arch/arm/boot/dts/meson.dtsi b/arch/arm/boot/dts/meson.dtsi
index 8bae6ed..bd0e864 100644 (file)
--- a/arch/arm/boot/dts/meson.dtsi
+++ b/arch/arm/boot/dts/meson.dtsi
@@ -50,6 +50,7 @@
                                compatible = "amlogic,meson6-uart", "amlogic,meson-uart";
                                reg = <0x84c0 0x18>;
                                interrupts = <GIC_SPI 26 IRQ_TYPE_EDGE_RISING>;
+                               fifo-size = <128>;
                                status = "disabled";
                        };