From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 21 Feb 2023 09:07:02 +0100 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1pUNfy-00Dea8-Nk for lore@lore.pengutronix.de; Tue, 21 Feb 2023 09:07:02 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pUNfx-0006pp-Gq for lore@pengutronix.de; Tue, 21 Feb 2023 09:07:02 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=YGl3dpF70Oorjx0a0uNOIwJlgj+9oYHoYd9L0Y2BSXY=; b=YyoLU3ZUjhfONCJONKT97ET7+V MQ0PSMHJ+V8zFx5io3dT3O8bgJ+v8DmA/jfwkzJMtHKsR22bPcN3z3YA/owLeTwh77TxRBQgtxJuP akT3P613cEwYsgjDbgRIulmx2p7d5msHKd8q5Rhw4i6H20sXGDPnEzuMu6i3IboAfJkgY+IWlXrVa izut5Gzhn/YRuXyxZhDMaH3rIS1SkUN0Ugw5PKHsPeObdJpIj944jbV+HJHqSQut+FqMyPixoJ1lB tWjNa38OlMImBFJ+9OURv09Q99opD3Z/f0DA165869DUjEXOcVYMELSEI4gyQbxkdlsV2NolkXl9g i3Ia+sTw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pUNeg-006yPh-1G; Tue, 21 Feb 2023 08:05:42 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pUNeV-006yIv-MU for barebox@lists.infradead.org; Tue, 21 Feb 2023 08:05:34 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pUNeS-00062c-NU; Tue, 21 Feb 2023 09:05:28 +0100 Received: from [2a0a:edc0:0:1101:1d::54] (helo=dude05.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1pUNeQ-006RjW-Sq; Tue, 21 Feb 2023 09:05:28 +0100 Received: from afa by dude05.red.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1pUNeP-002YHL-QM; Tue, 21 Feb 2023 09:05:25 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: lst@pengutronix.de, Ahmad Fatoum Date: Tue, 21 Feb 2023 09:05:19 +0100 Message-Id: <20230221080524.607241-8-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230221080524.607241-1-a.fatoum@pengutronix.de> References: <20230221080524.607241-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230221_000531_890668_34C76A69 X-CRM114-Status: UNSURE ( 9.80 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.8 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH RFC 07/12] dma: define CONFIG_OF_DMA_COHERENCY X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) Some architectures are either exclusively cache-coherent or not, but some others can have only some devices that snoop the bus, while the rest doesn't. Provide a new CONFIG_OF_DMA_COHERENCY symbol for selection on such platforms. Signed-off-by: Ahmad Fatoum --- drivers/dma/Kconfig | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index 46b9b90d8231..d96fcd0f845a 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -7,4 +7,14 @@ config MXS_APBH_DMA select STMP_DEVICE help Experimental! + +config OF_DMA_COHERENCY + bool "Respect device tree DMA coherency settings" if COMPILE_TEST + depends on HAS_DMA + help + For most platforms supported, either all DMA is coherent or it isn't. + Platforms that have DMA masters of mixed coherency or that differ + from the architecture default will select this option to parse + DMA coherency out of the DT. + endmenu -- 2.30.2