diff options
| author | Patrick Delaunay <patrick.delaunay@st.com> | 2019-02-27 15:36:44 +0100 |
|---|---|---|
| committer | Jagan Teki <jagan@amarulasolutions.com> | 2019-04-12 11:54:50 +0530 |
| commit | b0cc1b846fcb310c0ac2f8cbeb4ed5947dc52912 (patch) | |
| tree | 7d112ac9bc6474fe26d616721e49d672b9413f51 /common/spl/spl_spi.c | |
| parent | f909ddb3e1770a5ef18606b46000e0d3eaf63b2e (diff) | |
dm: spi: Read default speed and mode values from DT
This patch update the behavior introduced by
commit 96907c0fe50a ("dm: spi: Read default speed and mode values from DT")
In case of DT boot, don't read default speed and mode for SPI from
CONFIG_* but instead read from DT node. This will make sure that boards
with multiple SPI/QSPI controllers can be probed at different
bus frequencies and SPI modes.
Remove also use in boards of the value speed=0 (no more supported)
for ENV in SPI by using CONFIG_ENV_SPI_MAX_HZ=0.
DT values will be always used when available (full DM support of
SPI slave with available DT node) even if speed and mode are requested;
for example in splash screen support (in splash_sf_read_raw)
or in SPL boot (in spl_spi_load_image).
The caller of spi_get_bus_and_cs() no more need to force speed=0.
But the current behavior don't change if the SPI slave is not
present (device with generic driver is created automatically)
or if platdata is used (CONFIG_OF_PLATDATA).
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Diffstat (limited to 'common/spl/spl_spi.c')
| -rw-r--r-- | common/spl/spl_spi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/common/spl/spl_spi.c b/common/spl/spl_spi.c index 8cd4830a39..9b74473377 100644 --- a/common/spl/spl_spi.c +++ b/common/spl/spl_spi.c @@ -77,6 +77,8 @@ static int spl_spi_load_image(struct spl_image_info *spl_image, /* * Load U-Boot image from SPI flash into RAM + * In DM mode: defaults speed and mode will be + * taken from DT when available */ flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS, |