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Ip=[158.140.1.28]; Helo=[sjmaillnx1.cadence.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR07MB4488 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-11-13_06:2019-11-13,2019-11-13 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_check_notspam policy=outbound_check score=0 adultscore=0 spamscore=0 clxscore=1015 impostorscore=0 mlxscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 bulkscore=0 suspectscore=1 mlxlogscore=854 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1911140055 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191113_215231_742335_AB0E532F X-CRM114-Status: GOOD ( 10.99 ) X-Spam-Score: -0.9 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [208.84.65.235 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux I3C List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-i3c@lists.infradead.org, agolec@cadence.com, Przemyslaw Gaj , rafalc@cadence.com, vitor.soares@synopsys.com Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=patchwork.kernel.org@lists.infradead.org This patch adds support for THD_DEL (Data Hold Delay) to Cadence I3C master constoller driver. Signed-off-by: Przemyslaw Gaj --- drivers/i3c/master/i3c-master-cdns.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/i3c/master/i3c-master-cdns.c b/drivers/i3c/master/i3c-master-cdns.c index 10db0bf0655a..90ea98eef905 100644 --- a/drivers/i3c/master/i3c-master-cdns.c +++ b/drivers/i3c/master/i3c-master-cdns.c @@ -60,6 +60,7 @@ #define CTRL_HALT_EN BIT(30) #define CTRL_MCS BIT(29) #define CTRL_MCS_EN BIT(28) +#define CTRL_THD_DEL(x) (((x) << 24) & GENMASK(25, 24)) #define CTRL_HJ_DISEC BIT(8) #define CTRL_MST_ACK BIT(7) #define CTRL_HJ_ACK BIT(6) @@ -1186,7 +1187,7 @@ static int cdns_i3c_master_bus_init(struct i3c_master_controller *m) struct cdns_i3c_master *master = to_cdns_i3c_master(m); unsigned long pres_step, sysclk_rate, max_i2cfreq; struct i3c_bus *bus = i3c_master_get_bus(m); - u32 ctrl, prescl0, prescl1, pres, low; + u32 ctrl, prescl0, prescl1, pres, low, thd_del; struct i3c_device_info info = { }; int ret, ncycles; @@ -1264,6 +1265,8 @@ static int cdns_i3c_master_bus_init(struct i3c_master_controller *m) * We will issue ENTDAA afterwards from the threaded IRQ handler. */ ctrl |= CTRL_HJ_ACK | CTRL_HJ_DISEC | CTRL_HALT_EN | CTRL_MCS_EN; + if (!of_property_read_u32(m->dev.of_node, "thd_del", &thd_del)) + ctrl |= CTRL_THD_DEL(thd_del); writel(ctrl, master->regs + CTRL); cdns_i3c_master_enable(master); From patchwork Thu Nov 14 05:51:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Przemys=C5=82aw_Gaj?= X-Patchwork-Id: 11243107 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D65D3138C for ; Thu, 14 Nov 2019 05:52:40 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BE83F206EF for ; Thu, 14 Nov 2019 05:52:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="NVxorhU/"; 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Thu, 14 Nov 2019 06:52:26 +0100 From: Przemyslaw Gaj To: Subject: [PATCH 2/3] dt-bindings: i3c: Document data hold delay feature Date: Thu, 14 Nov 2019 06:51:54 +0100 Message-ID: <20191114055155.20446-3-pgaj@cadence.com> X-Mailer: git-send-email 2.14.0 In-Reply-To: <20191114055155.20446-1-pgaj@cadence.com> References: <20191114055155.20446-1-pgaj@cadence.com> MIME-Version: 1.0 X-OrganizationHeadersPreserved: maileu3.global.cadence.com X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:158.140.1.28; IPV:CAL; SCL:-1; CTRY:US; EFV:NLI; SFV:NSPM; SFS:(10009020)(4636009)(39850400004)(396003)(136003)(376002)(346002)(189003)(36092001)(199004)(356004)(186003)(48376002)(36756003)(426003)(76130400001)(446003)(11346002)(6666004)(50466002)(1076003)(107886003)(7636002)(305945005)(5660300002)(76176011)(16586007)(51416003)(47776003)(486006)(26005)(54906003)(476003)(2616005)(126002)(316002)(42186006)(4326008)(336012)(2906002)(2351001)(87636003)(26826003)(50226002)(8936002)(478600001)(6916009)(246002)(70206006)(70586007)(86362001)(8676002); 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X-Spam-Score: -0.9 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [208.86.201.193 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux I3C List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-i3c@lists.infradead.org, agolec@cadence.com, Przemyslaw Gaj , rafalc@cadence.com, vitor.soares@synopsys.com Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=patchwork.kernel.org@lists.infradead.org Documenting THD_DEL (Data Hold Delay) feature of Cadence I3C master controller. Signed-off-by: Przemyslaw Gaj --- Documentation/devicetree/bindings/i3c/cdns,i3c-master.txt | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/i3c/cdns,i3c-master.txt b/Documentation/devicetree/bindings/i3c/cdns,i3c-master.txt index 1cf6182f888c..7d6349354390 100644 --- a/Documentation/devicetree/bindings/i3c/cdns,i3c-master.txt +++ b/Documentation/devicetree/bindings/i3c/cdns,i3c-master.txt @@ -21,6 +21,12 @@ Documentation/devicetree/bindings/i3c/i3c.txt for more details): - i2c-scl-hz - i3c-scl-hz +Optional properties, Cadence I3C master controller specific: + +- thd_del: Data Hold Delay. Sets data hold delay (i.e. SDA_OUT data + line will change its value with extra delay that specified + in this register). + I3C device connected on the bus follow the generic description (see Documentation/devicetree/bindings/i3c/i3c.txt for more details). 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X-Spam-Score: -0.9 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [208.84.65.235 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux I3C List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-i3c@lists.infradead.org, agolec@cadence.com, Przemyslaw Gaj , rafalc@cadence.com, vitor.soares@synopsys.com Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=patchwork.kernel.org@lists.infradead.org As discussed with Boris Brezillon - I'm adding myself as the maintainer. Signed-off-by: Przemyslaw Gaj --- MAINTAINERS | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index c4c532c70b86..afdce16d2be5 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7821,6 +7821,12 @@ S: Maintained F: Documentation/devicetree/bindings/i3c/snps,dw-i3c-master.txt F: drivers/i3c/master/dw* +I3C DRIVER FOR CADENCE I3C MASTER IP +M: Przemysław Gaj +S: Maintained +F: Documentation/devicetree/bindings/i3c/cdns,i3c-master.txt +F: drivers/i3c/master/i3c-master-cdns.c + IA64 (Itanium) PLATFORM M: Tony Luck M: Fenghua Yu