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Fri, 24 Sep 2021 03:09:31 -0700 Envelope-to: git@xilinx.com, arnd@arndb.de, saikrishna12468@gmail.com, broonie@kernel.org, robh+dt@kernel.org, gregkh@linuxfoundation.org, linux-arm-kernel@lists.infradead.org, iwamatsu@nigauri.org, p.yadav@ti.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org Received: from [172.23.63.68] (port=40098 helo=xhdvnc208.xilinx.com) by smtp.xilinx.com with esmtp (Exim 4.90) (envelope-from ) id 1mTi94-000EVk-96; Fri, 24 Sep 2021 03:09:30 -0700 Received: by xhdvnc208.xilinx.com (Postfix, from userid 14964) id 44D792044F; Fri, 24 Sep 2021 15:39:16 +0530 (IST) From: Sai Krishna Potthuri To: Mark Brown , Rob Herring , Pratyush Yadav , Michal Simek , "Greg Kroah-Hartman" CC: , , , , , , Arnd Bergmann , Nobuhiro Iwamatsu , Sai Krishna Potthuri Subject: [PATCH 1/4] firmware: xilinx: Add OSPI Mux selection support Date: Fri, 24 Sep 2021 15:37:08 +0530 Message-ID: <1632478031-12242-2-git-send-email-lakshmi.sai.krishna.potthuri@xilinx.com> X-Mailer: git-send-email 2.1.1 In-Reply-To: <1632478031-12242-1-git-send-email-lakshmi.sai.krishna.potthuri@xilinx.com> References: <1632478031-12242-1-git-send-email-lakshmi.sai.krishna.potthuri@xilinx.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: d7913917-ee86-4956-2649-08d97f4372a8 X-MS-TrafficTypeDiagnostic: CH0PR02MB8011: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:4714; 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X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Sep 2021 10:09:51.1465 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d7913917-ee86-4956-2649-08d97f4372a8 X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch01.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: BN1NAM02FT033.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR02MB8011 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add OSPI Mux selection API support to select the AXI interface to OSPI. Signed-off-by: Sai Krishna Potthuri --- drivers/firmware/xilinx/zynqmp.c | 17 +++++++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 12 ++++++++++++ 2 files changed, 29 insertions(+) diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 15b138326ecc..43c3b5a9eef7 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -647,6 +647,23 @@ int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type) } EXPORT_SYMBOL_GPL(zynqmp_pm_sd_dll_reset); +/** + * zynqmp_pm_ospi_mux_select() - OSPI Mux selection + * + * @dev_id: Device Id of the OSPI device. + * @select: OSPI Mux select value. + * + * This function select the OSPI Mux. + * + * Return: Returns status, either success or error+reason + */ +int zynqmp_pm_ospi_mux_select(u32 dev_id, u32 select) +{ + return zynqmp_pm_invoke_fn(PM_IOCTL, dev_id, IOCTL_OSPI_MUX_SELECT, + select, 0, NULL); +} +EXPORT_SYMBOL_GPL(zynqmp_pm_ospi_mux_select); + /** * zynqmp_pm_write_ggs() - PM API for writing global general storage (ggs) * @index: GGS register index diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index 9d1a5c175065..6979a79f553a 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -119,6 +119,7 @@ enum pm_ioctl_id { IOCTL_READ_PGGS = 15, /* Set healthy bit value */ IOCTL_SET_BOOT_HEALTH_STATUS = 17, + IOCTL_OSPI_MUX_SELECT = 21, }; enum pm_query_id { @@ -347,6 +348,11 @@ enum zynqmp_pm_shutdown_subtype { ZYNQMP_PM_SHUTDOWN_SUBTYPE_SYSTEM = 2, }; +enum ospi_mux_select_type { + PM_OSPI_MUX_SEL_DMA = 0, + PM_OSPI_MUX_SEL_LINEAR = 1, +}; + /** * struct zynqmp_pm_query_data - PM query data * @qid: query ID @@ -383,6 +389,7 @@ int zynqmp_pm_set_pll_frac_data(u32 clk_id, u32 data); int zynqmp_pm_get_pll_frac_data(u32 clk_id, u32 *data); int zynqmp_pm_set_sd_tapdelay(u32 node_id, u32 type, u32 value); int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type); +int zynqmp_pm_ospi_mux_select(u32 dev_id, u32 select); int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset, const enum zynqmp_pm_reset_action assert_flag); int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset, u32 *status); @@ -503,6 +510,11 @@ static inline int zynqmp_pm_sd_dll_reset(u32 node_id, u32 type) return -ENODEV; } +static inline int zynqmp_pm_ospi_mux_select(u32 dev_id, u32 select) +{ + return -ENODEV; +} + static inline int zynqmp_pm_reset_assert(const enum zynqmp_pm_reset reset, const enum zynqmp_pm_reset_action assert_flag) { -- 2.17.1