From patchwork Tue May 30 14:55:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13260318 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 09DB5C77B7A for ; Tue, 30 May 2023 14:56:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232609AbjE3O4e (ORCPT ); Tue, 30 May 2023 10:56:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34336 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229626AbjE3O4e (ORCPT ); Tue, 30 May 2023 10:56:34 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F29BB8F; Tue, 30 May 2023 07:56:32 -0700 (PDT) Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.200]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4QVwRH6K15z67NsF; Tue, 30 May 2023 22:54:51 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Tue, 30 May 2023 15:56:30 +0100 From: Jonathan Cameron To: CC: Wolfram Sang , Niyas Sait , Klaus Jensen , Andy Shevchenko , , Jeremy Kerr , Matt Johnston , Shesha Bhushan Sreenivasamurthy , , , "Viacheslav A . Dubeyko" Subject: [RFC PATCH v2 1/6] i2c: acpi: set slave mode flag Date: Tue, 30 May 2023 15:55:56 +0100 Message-ID: <20230530145601.2592-2-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230530145601.2592-1-Jonathan.Cameron@huawei.com> References: <20230530145601.2592-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100001.china.huawei.com (7.191.160.183) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org If the GenericSerialBusConnection includes the General Flag for slave mode set it during parsing. Reviewed-by: Andy Shevchenko Signed-off-by: Jonathan Cameron --- v2: Picked up tag. --- drivers/i2c/i2c-core-acpi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c index d6037a328669..7dda5eab9645 100644 --- a/drivers/i2c/i2c-core-acpi.c +++ b/drivers/i2c/i2c-core-acpi.c @@ -125,6 +125,9 @@ static int i2c_acpi_fill_info(struct acpi_resource *ares, void *data) if (sb->access_mode == ACPI_I2C_10BIT_MODE) info->flags |= I2C_CLIENT_TEN; + if (sb->slave_mode) + info->flags |= I2C_CLIENT_SLAVE; + return 1; } From patchwork Tue May 30 14:55:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13260319 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 559C0C77B7A for ; Tue, 30 May 2023 14:57:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232584AbjE3O5G (ORCPT ); Tue, 30 May 2023 10:57:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34778 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232649AbjE3O5F (ORCPT ); Tue, 30 May 2023 10:57:05 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 59931FE; Tue, 30 May 2023 07:57:03 -0700 (PDT) Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.226]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4QVwRL2JDhz6DB95; Tue, 30 May 2023 22:54:54 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Tue, 30 May 2023 15:57:00 +0100 From: Jonathan Cameron To: CC: Wolfram Sang , Niyas Sait , Klaus Jensen , Andy Shevchenko , , Jeremy Kerr , Matt Johnston , Shesha Bhushan Sreenivasamurthy , , , "Viacheslav A . Dubeyko" Subject: [RFC PATCH v2 2/6] i2c: aspeed: Use platform_get_irq() instead of opencoding Date: Tue, 30 May 2023 15:55:57 +0100 Message-ID: <20230530145601.2592-3-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230530145601.2592-1-Jonathan.Cameron@huawei.com> References: <20230530145601.2592-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100001.china.huawei.com (7.191.160.183) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org A cleanup in it's own right. This has the handy side effect of working for ACPI FW as well (unlike fwnode_irq_get() which works for ARM64 but not x86 ACPI) Signed-off-by: Jonathan Cameron --- v2: Andy Schevchenko review. Added check on whether we have an IRQ from platform_get_irq() --- drivers/i2c/busses/i2c-aspeed.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c index d3c99c5b3247..21a2f139f445 100644 --- a/drivers/i2c/busses/i2c-aspeed.c +++ b/drivers/i2c/busses/i2c-aspeed.c @@ -19,7 +19,6 @@ #include #include #include -#include #include #include #include @@ -1043,7 +1042,10 @@ static int aspeed_i2c_probe_bus(struct platform_device *pdev) if (ret < 0) return ret; - irq = irq_of_parse_and_map(pdev->dev.of_node, 0); + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + ret = devm_request_irq(&pdev->dev, irq, aspeed_i2c_bus_irq, 0, dev_name(&pdev->dev), bus); if (ret < 0) From patchwork Tue May 30 14:55:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13260320 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9D84AC7EE2C for ; Tue, 30 May 2023 14:57:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232340AbjE3O5q (ORCPT ); Tue, 30 May 2023 10:57:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35296 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232793AbjE3O5k (ORCPT ); Tue, 30 May 2023 10:57:40 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D591B129; Tue, 30 May 2023 07:57:33 -0700 (PDT) Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.226]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4QVwRw5QWmz6DB9n; Tue, 30 May 2023 22:55:24 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Tue, 30 May 2023 15:57:31 +0100 From: Jonathan Cameron To: CC: Wolfram Sang , Niyas Sait , Klaus Jensen , Andy Shevchenko , , Jeremy Kerr , Matt Johnston , Shesha Bhushan Sreenivasamurthy , , , "Viacheslav A . Dubeyko" Subject: [RFC PATCH v2 3/6] i2c: aspeed: Don't report error when optional dt bus-frequency not supplied Date: Tue, 30 May 2023 15:55:58 +0100 Message-ID: <20230530145601.2592-4-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230530145601.2592-1-Jonathan.Cameron@huawei.com> References: <20230530145601.2592-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100001.china.huawei.com (7.191.160.183) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org The bindings have this property as optional with a default of 100kHz. As such the driver should not be printing an error message if it is not supplied. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko --- v2: New patch after Andy raised some questions about this property and I read the binding doc. --- drivers/i2c/busses/i2c-aspeed.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c index 21a2f139f445..4363bfe06f9b 100644 --- a/drivers/i2c/busses/i2c-aspeed.c +++ b/drivers/i2c/busses/i2c-aspeed.c @@ -1003,13 +1003,9 @@ static int aspeed_i2c_probe_bus(struct platform_device *pdev) } reset_control_deassert(bus->rst); - ret = of_property_read_u32(pdev->dev.of_node, - "bus-frequency", &bus->bus_frequency); - if (ret < 0) { - dev_err(&pdev->dev, - "Could not read bus-frequency property\n"); - bus->bus_frequency = I2C_MAX_STANDARD_MODE_FREQ; - } + bus->bus_frequency = I2C_MAX_STANDARD_MODE_FREQ; + of_property_read_u32(pdev->dev.of_node, + "bus-frequency", &bus->bus_frequency); match = of_match_node(aspeed_i2c_bus_of_table, pdev->dev.of_node); if (!match) From patchwork Tue May 30 14:55:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13260321 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CA31CC77B73 for ; Tue, 30 May 2023 14:58:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231403AbjE3O6k (ORCPT ); Tue, 30 May 2023 10:58:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35968 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232465AbjE3O6a (ORCPT ); Tue, 30 May 2023 10:58:30 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1C5C1A7; Tue, 30 May 2023 07:58:09 -0700 (PDT) Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.206]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4QVwSW1tFNz6DB8r; Tue, 30 May 2023 22:55:55 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Tue, 30 May 2023 15:58:01 +0100 From: Jonathan Cameron To: CC: Wolfram Sang , Niyas Sait , Klaus Jensen , Andy Shevchenko , , Jeremy Kerr , Matt Johnston , Shesha Bhushan Sreenivasamurthy , , , "Viacheslav A . Dubeyko" Subject: [RFC PATCH v2 4/6] i2c: aspeed: switch to generic fw properties. Date: Tue, 30 May 2023 15:55:59 +0100 Message-ID: <20230530145601.2592-5-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230530145601.2592-1-Jonathan.Cameron@huawei.com> References: <20230530145601.2592-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100001.china.huawei.com (7.191.160.183) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org Moving over to generic firmware properties allows this driver to get closer to working out of the box with both device tree and other firmware options, such as ACPI via PRP0001. Tested only via QEMU emulation. Signed-off-by: Jonathan Cameron --- v2: - Added a proper patch description. - Updated to reflect optional nature of bus-frequency. --- drivers/i2c/busses/i2c-aspeed.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c index 4363bfe06f9b..353834d7ffd5 100644 --- a/drivers/i2c/busses/i2c-aspeed.c +++ b/drivers/i2c/busses/i2c-aspeed.c @@ -18,9 +18,8 @@ #include #include #include -#include -#include #include +#include #include #include @@ -975,7 +974,6 @@ MODULE_DEVICE_TABLE(of, aspeed_i2c_bus_of_table); static int aspeed_i2c_probe_bus(struct platform_device *pdev) { - const struct of_device_id *match; struct aspeed_i2c_bus *bus; struct clk *parent_clk; int irq, ret; @@ -1004,15 +1002,13 @@ static int aspeed_i2c_probe_bus(struct platform_device *pdev) reset_control_deassert(bus->rst); bus->bus_frequency = I2C_MAX_STANDARD_MODE_FREQ; - of_property_read_u32(pdev->dev.of_node, - "bus-frequency", &bus->bus_frequency); + device_property_read_u32(&pdev->dev, + "bus-frequency", &bus->bus_frequency); - match = of_match_node(aspeed_i2c_bus_of_table, pdev->dev.of_node); - if (!match) + bus->get_clk_reg_val = (u32 (*)(struct device *, u32)) + device_get_match_data(&pdev->dev); + if (!bus->get_clk_reg_val) bus->get_clk_reg_val = aspeed_i2c_24xx_get_clk_reg_val; - else - bus->get_clk_reg_val = (u32 (*)(struct device *, u32)) - match->data; /* Initialize the I2C adapter */ spin_lock_init(&bus->lock); From patchwork Tue May 30 14:56:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13260322 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7CB2EC7EE2F for ; Tue, 30 May 2023 14:59:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231724AbjE3O7W (ORCPT ); Tue, 30 May 2023 10:59:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37000 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232167AbjE3O7U (ORCPT ); Tue, 30 May 2023 10:59:20 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F0F8D18D; Tue, 30 May 2023 07:58:47 -0700 (PDT) Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.200]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4QVwTd68Kvz67ydF; Tue, 30 May 2023 22:56:53 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Tue, 30 May 2023 15:58:32 +0100 From: Jonathan Cameron To: CC: Wolfram Sang , Niyas Sait , Klaus Jensen , Andy Shevchenko , , Jeremy Kerr , Matt Johnston , Shesha Bhushan Sreenivasamurthy , , , "Viacheslav A . Dubeyko" Subject: [RFC PATCH v2 5/6] i2c: aspeed: Set the fwnode for the adap->dev Date: Tue, 30 May 2023 15:56:00 +0100 Message-ID: <20230530145601.2592-6-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230530145601.2592-1-Jonathan.Cameron@huawei.com> References: <20230530145601.2592-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100001.china.huawei.com (7.191.160.183) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org This is needed for the bus matching used for ACPI based i2c client registration. Signed-off-by: Jonathan Cameron Reviewed-by: Andy Shevchenko --- v2: Drop the separate setting of the of_node. (Thanks Andy) --- drivers/i2c/busses/i2c-aspeed.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c index 353834d7ffd5..ae8e187f2233 100644 --- a/drivers/i2c/busses/i2c-aspeed.c +++ b/drivers/i2c/busses/i2c-aspeed.c @@ -1017,7 +1017,6 @@ static int aspeed_i2c_probe_bus(struct platform_device *pdev) bus->adap.retries = 0; bus->adap.algo = &aspeed_i2c_algo; bus->adap.dev.parent = &pdev->dev; - bus->adap.dev.of_node = pdev->dev.of_node; strscpy(bus->adap.name, pdev->name, sizeof(bus->adap.name)); i2c_set_adapdata(&bus->adap, bus); @@ -1043,6 +1042,8 @@ static int aspeed_i2c_probe_bus(struct platform_device *pdev) if (ret < 0) return ret; + device_set_node(&bus->adap.dev, dev_fwnode(&pdev->dev)); + ret = i2c_add_adapter(&bus->adap); if (ret < 0) return ret; From patchwork Tue May 30 14:56:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13260323 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9131C7EE2F for ; Tue, 30 May 2023 14:59:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231910AbjE3O7g (ORCPT ); Tue, 30 May 2023 10:59:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37214 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232505AbjE3O72 (ORCPT ); Tue, 30 May 2023 10:59:28 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1CA57114; Tue, 30 May 2023 07:59:05 -0700 (PDT) Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.201]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4QVwQS2KXmz6J7S1; Tue, 30 May 2023 22:54:08 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Tue, 30 May 2023 15:59:02 +0100 From: Jonathan Cameron To: CC: Wolfram Sang , Niyas Sait , Klaus Jensen , Andy Shevchenko , , Jeremy Kerr , Matt Johnston , Shesha Bhushan Sreenivasamurthy , , , "Viacheslav A . Dubeyko" Subject: [RFC PATCH v2 6/6] HACK: i2c: aspeed: Comment clock out and make reset optional Date: Tue, 30 May 2023 15:56:01 +0100 Message-ID: <20230530145601.2592-7-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230530145601.2592-1-Jonathan.Cameron@huawei.com> References: <20230530145601.2592-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100001.china.huawei.com (7.191.160.183) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org Needs tidying up - hopefully can do clock right using ongoing work from Niyas https://linaro.atlassian.net/wiki/spaces/CLIENTPC/pages/28832333867/ACPI+Clock+Management ACPI does not provide an equivalent reset deassert / assert. _RST doesn't fit that model, so for now make the reset optional. Signed-off-by: Jonathan Cameron --- v2: - Use optional variant for the reset. - Left the clock with the hideous hack to keep it obvious that it is a hack given no way for us to get the clk rate on ACPI firmware yet and I don't want to pretend there is. --- drivers/i2c/busses/i2c-aspeed.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c index ae8e187f2233..f0b5789aee21 100644 --- a/drivers/i2c/busses/i2c-aspeed.c +++ b/drivers/i2c/busses/i2c-aspeed.c @@ -986,14 +986,14 @@ static int aspeed_i2c_probe_bus(struct platform_device *pdev) if (IS_ERR(bus->base)) return PTR_ERR(bus->base); - parent_clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(parent_clk)) - return PTR_ERR(parent_clk); - bus->parent_clk_frequency = clk_get_rate(parent_clk); + // parent_clk = devm_clk_get(&pdev->dev, NULL); + // if (IS_ERR(parent_clk))// + // return PTR_ERR(parent_clk); + bus->parent_clk_frequency = 1000000;//clk_get_rate(parent_clk); /* We just need the clock rate, we don't actually use the clk object. */ - devm_clk_put(&pdev->dev, parent_clk); + //devm_clk_put(&pdev->dev, parent_clk); - bus->rst = devm_reset_control_get_shared(&pdev->dev, NULL); + bus->rst = devm_reset_control_get_optional_shared(&pdev->dev, NULL); if (IS_ERR(bus->rst)) { dev_err(&pdev->dev, "missing or invalid reset controller device tree entry\n");