From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CF5C028DBB; Fri, 24 Nov 2023 19:26:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="qIuT9aAA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5BF54C433C8; Fri, 24 Nov 2023 19:26:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700853977; bh=zw28BlohxHWuk7qoxS1AlRLObfoaY6tkAUImzuk6pNU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qIuT9aAAalE0soXPutJ+94KoCBrOJUwgrEnj08ez+02Ibm0lBGAZoJg5gszlfl+H9 iKYgfjAVsHzzn3hCNjO6c6Nz2w2CkTHS38izdr4Mpswgp4oOuwi5uQk3bnvJaCte0X 1S9CZduXsv4FZF5w+M5i3BMsRjVhevqTYwmOCMOk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Kevin Hilman , Neil Armstrong , Sasha Levin Subject: [PATCH 5.4 107/159] tty: serial: meson: retrieve port FIFO size from DT Date: Fri, 24 Nov 2023 17:55:24 +0000 Message-ID: <20231124171946.340888863@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231124171941.909624388@linuxfoundation.org> References: <20231124171941.909624388@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Neil Armstrong [ Upstream commit 27d44e05d7b85d9d4cfe0a3c0663ea49752ece93 ] Now the DT bindings has a property to get the FIFO size for a particular port, retrieve it and use to setup the FIFO interrupts threshold. Reviewed-by: Kevin Hilman Signed-off-by: Neil Armstrong Link: https://lore.kernel.org/r/20210518075833.3736038-3-narmstrong@baylibre.com Signed-off-by: Greg Kroah-Hartman Stable-dep-of: 2a1d728f20ed ("tty: serial: meson: fix hard LOCKUP on crtscts mode") Signed-off-by: Sasha Levin --- drivers/tty/serial/meson_uart.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c index 6a74a31231ebf..7563fd215d816 100644 --- a/drivers/tty/serial/meson_uart.c +++ b/drivers/tty/serial/meson_uart.c @@ -663,6 +663,7 @@ static int meson_uart_probe(struct platform_device *pdev) { struct resource *res_mem, *res_irq; struct uart_port *port; + u32 fifosize = 64; /* Default is 64, 128 for EE UART_0 */ int ret = 0; if (pdev->dev.of_node) @@ -690,6 +691,8 @@ static int meson_uart_probe(struct platform_device *pdev) if (!res_irq) return -ENODEV; + of_property_read_u32(pdev->dev.of_node, "fifo-size", &fifosize); + if (meson_ports[pdev->id]) { dev_err(&pdev->dev, "port %d already allocated\n", pdev->id); return -EBUSY; @@ -719,7 +722,7 @@ static int meson_uart_probe(struct platform_device *pdev) port->type = PORT_MESON; port->x_char = 0; port->ops = &meson_uart_ops; - port->fifosize = 64; + port->fifosize = fifosize; meson_ports[pdev->id] = port; platform_set_drvdata(pdev, port); -- 2.42.0