mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: <nicolas.ferre@microchip.com>
To: Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Claudiu Beznea <claudiu.beznea@tuxon.dev>
Cc: <linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>,
	Ryan Wanner <ryan.wanner@microchip.com>,
	Cristian Birsan <cristian.birsan@microchip.com>,
	Nicolas Ferre <nicolas.ferre@microchip.com>,
	<stable@vger.kernel.org>
Subject: [PATCH 1/2] ARM: dts: microchip: sama7d65: fix uart fifo size to 32
Date: Fri, 14 Nov 2025 11:33:12 +0100	[thread overview]
Message-ID: <20251114103313.20220-1-nicolas.ferre@microchip.com> (raw)

From: Nicolas Ferre <nicolas.ferre@microchip.com>

On some flexcom nodes related to uart, the fifo sizes were wrong: fix
them to 32 data.  Note that product datasheet is being reviewed to fix
inconsistency, but this value is validated by product's designers.

Fixes: 261dcfad1b59 ("ARM: dts: microchip: add sama7d65 SoC DT")
Fixes: b51e4aea3ecf ("ARM: dts: microchip: sama7d65: Add FLEXCOMs to sama7d65 SoC")
Cc: <stable@vger.kernel.org> # 6.16+
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
---
 arch/arm/boot/dts/microchip/sama7d65.dtsi | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/microchip/sama7d65.dtsi b/arch/arm/boot/dts/microchip/sama7d65.dtsi
index e53e2dd6d530..cd2cf9a6f40b 100644
--- a/arch/arm/boot/dts/microchip/sama7d65.dtsi
+++ b/arch/arm/boot/dts/microchip/sama7d65.dtsi
@@ -557,7 +557,7 @@ uart4: serial@200 {
 				dma-names = "tx", "rx";
 				atmel,use-dma-rx;
 				atmel,use-dma-tx;
-				atmel,fifo-size = <16>;
+				atmel,fifo-size = <32>;
 				atmel,usart-mode = <AT91_USART_MODE_SERIAL>;
 				status = "disabled";
 			};
@@ -618,7 +618,7 @@ uart6: serial@200 {
 				clocks = <&pmc PMC_TYPE_PERIPHERAL 40>;
 				clock-names = "usart";
 				atmel,usart-mode = <AT91_USART_MODE_SERIAL>;
-				atmel,fifo-size = <16>;
+				atmel,fifo-size = <32>;
 				status = "disabled";
 			};
 		};
@@ -643,7 +643,7 @@ uart7: serial@200 {
 				dma-names = "tx", "rx";
 				atmel,use-dma-rx;
 				atmel,use-dma-tx;
-				atmel,fifo-size = <16>;
+				atmel,fifo-size = <32>;
 				atmel,usart-mode = <AT91_USART_MODE_SERIAL>;
 				status = "disabled";
 			};
-- 
2.43.0


             reply	other threads:[~2025-11-14 10:34 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-14 10:33 nicolas.ferre [this message]
2025-11-14 10:33 ` [PATCH 2/2] ARM: dts: microchip: sama7g5: " nicolas.ferre
2025-11-14 12:17   ` Claudiu Beznea
2025-11-14 12:16 ` [PATCH 1/2] ARM: dts: microchip: sama7d65: " Claudiu Beznea

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20251114103313.20220-1-nicolas.ferre@microchip.com \
    --to=nicolas.ferre@microchip.com \
    --cc=alexandre.belloni@bootlin.com \
    --cc=claudiu.beznea@tuxon.dev \
    --cc=cristian.birsan@microchip.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=ryan.wanner@microchip.com \
    --cc=stable@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

all inboxes | Powered by JetHome®