diff options
| author | T Karthik Reddy <t.karthik.reddy@xilinx.com> | 2022-05-12 04:05:32 -0600 |
|---|---|---|
| committer | Michal Simek <michal.simek@amd.com> | 2022-06-29 15:58:48 +0200 |
| commit | cf553bf20e51951110f88501577c7fe8bbf68386 (patch) | |
| tree | c25208b6aa462654f33af41bbccbef603f90784c /drivers/spi/cadence_qspi.c | |
| parent | 1e2b8139d95ea924d645886b323be7748579a6d1 (diff) | |
arm64: versal: Add versal specific cadence ospi driver
Add support for cadence ospi driver for Versal platform. This driver
provides support for DMA read operation which utilizes cadence qspi
driver.
If "cdns,is-dma" DT property is specified use dma for read operation
from cadence_qspi driver. As cadence_qspi_apb_dma_read() is defined in
cadence_ospi_versal driver add a weak function defination in
cadence_qspi driver.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220512100535.16364-3-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Diffstat (limited to 'drivers/spi/cadence_qspi.c')
| -rw-r--r-- | drivers/spi/cadence_qspi.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c index 7209bb43a77..f1d3050d076 100644 --- a/drivers/spi/cadence_qspi.c +++ b/drivers/spi/cadence_qspi.c @@ -27,6 +27,12 @@ #define CQSPI_READ 2 #define CQSPI_WRITE 3 +__weak int cadence_qspi_apb_dma_read(struct cadence_spi_plat *plat, + const struct spi_mem_op *op) +{ + return 0; +} + static int cadence_spi_write_speed(struct udevice *bus, uint hz) { struct cadence_spi_plat *plat = dev_get_plat(bus); @@ -288,8 +294,12 @@ static int cadence_spi_mem_exec_op(struct spi_slave *spi, break; case CQSPI_READ: err = cadence_qspi_apb_read_setup(plat, op); - if (!err) - err = cadence_qspi_apb_read_execute(plat, op); + if (!err) { + if (plat->is_dma) + err = cadence_qspi_apb_dma_read(plat, op); + else + err = cadence_qspi_apb_read_execute(plat, op); + } break; case CQSPI_WRITE: err = cadence_qspi_apb_write_setup(plat, op); @@ -342,6 +352,8 @@ static int cadence_spi_of_to_plat(struct udevice *bus) if (plat->ahbsize >= SZ_8M) plat->use_dac_mode = true; + plat->is_dma = dev_read_bool(bus, "cdns,is-dma"); + /* All other paramters are embedded in the child node */ subnode = dev_read_first_subnode(bus); if (!ofnode_valid(subnode)) { |