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From:   Neil Armstrong <narmstrong@baylibre.com>
To:     gregkh@linuxfoundation.org, jirislaby@kernel.org,
        devicetree@vger.kernel.org
Cc:     linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org,
        Neil Armstrong <narmstrong@baylibre.com>,
        Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Subject: [PATCH 1/3] dt-bindings: serial: amlogic,meson-uart: add fifo-size property
Date:   Tue, 18 May 2021 09:58:31 +0200
Message-Id: <20210518075833.3736038-2-narmstrong@baylibre.com>
In-Reply-To: <20210518075833.3736038-1-narmstrong@baylibre.com>
References: <20210518075833.3736038-1-narmstrong@baylibre.com>
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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@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 .../devicetree/bindings/serial/amlogic,meson-uart.yaml       | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml b/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
index 75ebc9952a99..7487aa6ef849 100644
--- a/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
+++ b/Documentation/devicetree/bindings/serial/amlogic,meson-uart.yaml
@@ -55,6 +55,11 @@ 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