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firmware: xilinx: Add OSPI Mux selection support

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Add OSPI Mux selection API support to select the AXI interface to OSPI.

Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Link: https://lore.kernel.org/r/1632478031-12242-2-git-send-email-lakshmi.sai.krishna.potthuri@xilinx.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sai Krishna Potthuri 2021-09-24 15:37:08 +05:30 committed by Mark Brown
parent 5c258a8a9c
commit 74e78adc6c
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GPG key ID: 24D68B725D5487D0
2 changed files with 29 additions and 0 deletions
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17
drivers/firmware/xilinx/zynqmp.c
View file

@ -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

12
include/linux/firmware/xlnx-zynqmp.h
View file

@ -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)
{