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Message-Id: <20210325152410.1795557-2-narmstrong@baylibre.com>
Date: Thu, 25 Mar 2021 16:24:08 +0100
From: Neil Armstrong <narmstrong@...libre.com>
To: gregkh@...uxfoundation.org
Cc: devicetree@...r.kernel.org, linux-serial@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
Neil Armstrong <narmstrong@...libre.com>,
Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH v2 1/3] dt-bindings: serial: amlogic,meson-uart: add fifo-size property
On most of the Amlogic SoCs, the first UART controller in the "Everything-Else"
power domain has 128bytes of RX & TX FIFO, so add an optional property to describe
a different FIFO size from the other ports (64bytes).
Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
---
.../devicetree/bindings/serial/amlogic,meson-uart.yaml | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml b/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
index 75ebc9952a99..8ece7f420c19 100644
--- a/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
@@ -55,6 +55,12 @@ properties:
- const: pclk
- const: baud
+
+ fifo-size:
+ description: The fifo size supported by the UART channel.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [64, 128]
+
required:
- compatible
- reg
--
2.25.1
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