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Wed, 6 Nov 2019 11:36:03 +0000 Received: from NWD2HUBCAS7.ad.analog.com (nwd2hubcas7.ad.analog.com [10.64.69.107]) by nwd2mta1.analog.com (8.13.8/8.13.8) with ESMTP id xA6Ba1vW003535 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=OK); Wed, 6 Nov 2019 03:36:01 -0800 Received: from saturn.ad.analog.com (10.48.65.117) by NWD2HUBCAS7.ad.analog.com (10.64.69.107) with Microsoft SMTP Server id 14.3.408.0; Wed, 6 Nov 2019 06:36:01 -0500 From: Alexandru Ardelean To: , CC: , , , , Michael Hennerich , Alexandru Ardelean Subject: [PATCH] clk: clk-gpio: Add dt option to propagate rate change to parent Date: Wed, 6 Nov 2019 13:35:51 +0200 Message-ID: <20191106113551.5557-1-alexandru.ardelean@analog.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ADIRoutedOnPrem: True X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:137.71.25.55;IPV:NLI;CTRY:US;EFV:NLI;SFV:NSPM;SFS:(10009020)(396003)(136003)(376002)(39860400002)(346002)(189003)(199004)(8676002)(8936002)(86362001)(476003)(126002)(70206006)(2616005)(426003)(36756003)(305945005)(26005)(186003)(356004)(336012)(50466002)(486006)(246002)(6666004)(106002)(110136005)(54906003)(48376002)(316002)(2870700001)(7636002)(2906002)(50226002)(47776003)(44832011)(51416003)(7696005)(1076003)(5660300002)(4326008)(107886003)(478600001)(70586007);DIR:OUT;SFP:1101;SCL:1;SRVR:BN7PR03MB3585;H:nwd2mta1.analog.com;FPR:;SPF:Pass;LANG:en;PTR:nwd2mail10.analog.com;MX:1;A:1; X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 45082c29-c45b-4e2c-941a-08d762ad8178 X-MS-TrafficTypeDiagnostic: BN7PR03MB3585: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1186; X-Forefront-PRVS: 02135EB356 X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: fp3LJ7gCbajcWXWROLp1sszCKnnAT9HwcxGNzWFhjY4+zykjj54/c3tPJghsD1VVUQ3mKXvWYryeD1zeumc/GLYH6kWi9sjRZBGugHcdsEzhQx6LJW2HxPH5HxD6QKL6l3wGxgVwarvCGZ4CnfIo+jY+jT2lA+q5wQNLNbat1bND3w0+yq9IZPxynkEPLVC5yBLk2v5kFBQ/BymX2Cs9i5jJwg07t/tcQOV3C4p3giu4Ps36PSPqcrtVA+okP4sbrSwplhMhwtsTzOfTnXIUqm8pNv74diJTTJsQSpU8FjCUavHsb4Ks8Cq8k8RsJW0RpRlbxjyIkPk7TsLxHbOTtUvHQjy9ifQ7vCFQ4u2/D0WuR9buGYAazAb7jNpc88u36ymS8eC7/R3ptR25BYTssnKNGZI0pk7iaSm9e+qqjLPP6AucGVrbdJ6QJIccczOE X-OriginatorOrg: analog.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Nov 2019 11:36:03.5970 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 45082c29-c45b-4e2c-941a-08d762ad8178 X-MS-Exchange-CrossTenant-Id: eaa689b4-8f87-40e0-9c6f-7228de4d754a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=eaa689b4-8f87-40e0-9c6f-7228de4d754a;Ip=[137.71.25.55];Helo=[nwd2mta1.analog.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN7PR03MB3585 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-11-06_03:2019-11-06,2019-11-06 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxlogscore=892 mlxscore=0 phishscore=0 priorityscore=1501 suspectscore=0 spamscore=0 impostorscore=0 lowpriorityscore=0 clxscore=1011 bulkscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1908290000 definitions=main-1911060118 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Michael Hennerich For certain setups/boards it's useful to propagate the rate change of the clock up one level to the parent clock. This change implements this by defining a `clk-set-rate-parent` device-tree property which sets the `CLK_SET_RATE_PARENT` flag to the clock (when set). Signed-off-by: Michael Hennerich Signed-off-by: Alexandru Ardelean --- drivers/clk/clk-gpio.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/clk/clk-gpio.c b/drivers/clk/clk-gpio.c index 9d930edd6516..6dfbc4b952fe 100644 --- a/drivers/clk/clk-gpio.c +++ b/drivers/clk/clk-gpio.c @@ -241,6 +241,7 @@ static int gpio_clk_driver_probe(struct platform_device *pdev) struct device_node *node = pdev->dev.of_node; const char **parent_names, *gpio_name; unsigned int num_parents; + unsigned long clk_flags; struct gpio_desc *gpiod; struct clk *clk; bool is_mux; @@ -274,13 +275,16 @@ static int gpio_clk_driver_probe(struct platform_device *pdev) return ret; } + clk_flags = of_property_read_bool(node, "clk-set-rate-parent") ? + CLK_SET_RATE_PARENT : 0; + if (is_mux) clk = clk_register_gpio_mux(&pdev->dev, node->name, - parent_names, num_parents, gpiod, 0); + parent_names, num_parents, gpiod, clk_flags); else clk = clk_register_gpio_gate(&pdev->dev, node->name, parent_names ? parent_names[0] : NULL, gpiod, - 0); + clk_flags); if (IS_ERR(clk)) return PTR_ERR(clk); -- 2.20.1