This allows us to put the SPI flash chip inside the SPI interface node, with U-Boot finding the correct bus and chip select automatically.
This is part of a series of changes to enable 'cros_test swsync' which is needed while flashrom EC support is missing.
Signed-off-by: Simon Glass sjg@chromium.org --- drivers/mtd/spi/sf_probe.c | 23 +++++++++++++++++++---- include/spi_flash.h | 13 +++++++++++++ 2 files changed, 32 insertions(+), 4 deletions(-)
diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c index 5eb8ffe..f021e56 100644 --- a/drivers/mtd/spi/sf_probe.c +++ b/drivers/mtd/spi/sf_probe.c @@ -285,16 +285,13 @@ int spi_flash_decode_fdt(const void *blob, struct spi_flash *flash) } #endif /* CONFIG_OF_CONTROL */
-struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, - unsigned int max_hz, unsigned int spi_mode) +static struct spi_flash *spi_flash_probe_slave(struct spi_slave *spi) { - struct spi_slave *spi; struct spi_flash *flash = NULL; u8 idcode[5]; int ret;
/* Setup spi_slave */ - spi = spi_setup_slave(bus, cs, max_hz, spi_mode); if (!spi) { printf("SF: Failed to set up slave\n"); return NULL; @@ -358,6 +355,24 @@ err_claim_bus: return NULL; }
+struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, + unsigned int max_hz, unsigned int spi_mode) +{ + struct spi_slave *spi; + + spi = spi_setup_slave(bus, cs, max_hz, spi_mode); + return spi_flash_probe_slave(spi); +} + +struct spi_flash *spi_flash_probe_fdt(const void *blob, int slave_node, + int spi_node) +{ + struct spi_slave *spi; + + spi = spi_setup_slave_fdt(blob, slave_node, spi_node); + return spi_flash_probe_slave(spi); +} + void spi_flash_free(struct spi_flash *flash) { spi_free_slave(flash->spi); diff --git a/include/spi_flash.h b/include/spi_flash.h index 25ca8f1..afc3a58 100644 --- a/include/spi_flash.h +++ b/include/spi_flash.h @@ -67,6 +67,19 @@ struct spi_flash {
struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, unsigned int max_hz, unsigned int spi_mode); + +/** + * Set up a new SPI flash from an fdt node + * + * @param blob Device tree blob + * @param slave_node Pointer to this SPI slave node in the device tree + * @param spi_node Cached pointer to the SPI interface this node belongs + * to + * @return 0 if ok, -1 on error + */ +struct spi_flash *spi_flash_probe_fdt(const void *blob, int slave_node, + int spi_node); + void spi_flash_free(struct spi_flash *flash);
static inline int spi_flash_read(struct spi_flash *flash, u32 offset,