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spi: cadence_qspi: convert to livetree

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Convert 'cadence_spi_ofdata_to_platdata' to use dev_read_* functions to
read driver parameters and 'dev_read_first_subnode'/'ofnode_read_*' to
read flash (child node) parameters.

Tested on socfpga_socrates (socfpga gen5).

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
This commit is contained in:
Simon Goldschmidt 2019-05-09 22:11:56 +02:00 committed by Marek Vasut
parent 460a97f3a2
commit 46b633d7b4
1 changed files with 19 additions and 20 deletions
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37
drivers/spi/cadence_qspi.c
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@ -18,8 +18,6 @@
#define CQSPI_INDIRECT_READ 2
#define CQSPI_INDIRECT_WRITE 3
DECLARE_GLOBAL_DATA_PTR;
static int cadence_spi_write_speed(struct udevice *bus, uint hz)
{
struct cadence_spi_platdata *plat = bus->platdata;
@ -295,36 +293,37 @@ static int cadence_spi_xfer(struct udevice *dev, unsigned int bitlen,
static int cadence_spi_ofdata_to_platdata(struct udevice *bus)
{
struct cadence_spi_platdata *plat = bus->platdata;
const void *blob = gd->fdt_blob;
int node = dev_of_offset(bus);
int subnode;
ofnode subnode;
plat->regbase = (void *)devfdt_get_addr_index(bus, 0);
plat->ahbbase = (void *)devfdt_get_addr_index(bus, 1);
plat->is_decoded_cs = fdtdec_get_bool(blob, node, "cdns,is-decoded-cs");
plat->fifo_depth = fdtdec_get_uint(blob, node, "cdns,fifo-depth", 128);
plat->fifo_width = fdtdec_get_uint(blob, node, "cdns,fifo-width", 4);
plat->trigger_address = fdtdec_get_uint(blob, node,
"cdns,trigger-address", 0);
plat->is_decoded_cs = dev_read_bool(bus, "cdns,is-decoded-cs");
plat->fifo_depth = dev_read_u32_default(bus, "cdns,fifo-depth", 128);
plat->fifo_width = dev_read_u32_default(bus, "cdns,fifo-width", 4);
plat->trigger_address = dev_read_u32_default(bus,
"cdns,trigger-address",
0);
/* All other paramters are embedded in the child node */
subnode = fdt_first_subnode(blob, node);
if (subnode < 0) {
subnode = dev_read_first_subnode(bus);
if (!ofnode_valid(subnode)) {
printf("Error: subnode with SPI flash config missing!\n");
return -ENODEV;
}
/* Use 500 KHz as a suitable default */
plat->max_hz = fdtdec_get_uint(blob, subnode, "spi-max-frequency",
plat->max_hz = ofnode_read_u32_default(subnode, "spi-max-frequency",
500000);
/* Read other parameters from DT */
plat->page_size = fdtdec_get_uint(blob, subnode, "page-size", 256);
plat->block_size = fdtdec_get_uint(blob, subnode, "block-size", 16);
plat->tshsl_ns = fdtdec_get_uint(blob, subnode, "cdns,tshsl-ns", 200);
plat->tsd2d_ns = fdtdec_get_uint(blob, subnode, "cdns,tsd2d-ns", 255);
plat->tchsh_ns = fdtdec_get_uint(blob, subnode, "cdns,tchsh-ns", 20);
plat->tslch_ns = fdtdec_get_uint(blob, subnode, "cdns,tslch-ns", 20);
plat->page_size = ofnode_read_u32_default(subnode, "page-size", 256);
plat->block_size = ofnode_read_u32_default(subnode, "block-size", 16);
plat->tshsl_ns = ofnode_read_u32_default(subnode, "cdns,tshsl-ns",
200);
plat->tsd2d_ns = ofnode_read_u32_default(subnode, "cdns,tsd2d-ns",
255);
plat->tchsh_ns = ofnode_read_u32_default(subnode, "cdns,tchsh-ns", 20);
plat->tslch_ns = ofnode_read_u32_default(subnode, "cdns,tslch-ns", 20);
debug("%s: regbase=%p ahbbase=%p max-frequency=%d page-size=%d\n",
__func__, plat->regbase, plat->ahbbase, plat->max_hz,