From 74e78adc6ccf6c3b53939788cf0c49f54db70731 Mon Sep 17 00:00:00 2001 From: Sai Krishna Potthuri Date: Fri, 24 Sep 2021 15:37:08 +0530 Subject: [PATCH] firmware: xilinx: Add OSPI Mux selection support Add OSPI Mux selection API support to select the AXI interface to OSPI. Signed-off-by: Sai Krishna Potthuri Link: https://lore.kernel.org/r/1632478031-12242-2-git-send-email-lakshmi.sai.krishna.potthuri@xilinx.com Signed-off-by: Mark Brown --- 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 a3cadba..1436e03 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -648,6 +648,23 @@ 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 * @value: Register value to be written diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index 56b426f..4c70a6e 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -123,6 +123,7 @@ 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 { @@ -351,6 +352,11 @@ 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 @@ -387,6 +393,7 @@ 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); @@ -508,6 +515,11 @@ 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) { -- 2.7.4