Add required binding support to probe through device tree.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The HSSPI block actually has two clock inputs, one for gating the block,
and one for the PLL rate. To allow these to be represented as two clocks,
add support for retrieving the rate from a separate "pll" clock, if the
"hsspi" clock does not provide one.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Add support for dual read/writes on spi-bcm63xx-hsspi. This has been
tested with a s25fl129p1 dual read capable spi flash, with a nice speed
improvement:
serial read:
root@OpenWrt:/# time dd if=/dev/mtd4 of=/dev/null bs=8192
2032+0 records in
2032+0 records out
real 0m 4.39s
user 0m 0.00s
sys 0m 1.55s
dual read:
root@OpenWrt:/# time dd if=/dev/mtd4 of=/dev/null bs=8192
2032+0 records in
2032+0 records out
real 0m 3.09s
user 0m 0.00s
sys 0m 1.56s
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Use SIMPLE_DEV_PM_OPS macro in order to make the code simpler.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Calling init_completion() once is enough.
For the rest of the iterations, call reinit_completion() instead.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Use the right CONFIG symbol to guard, properly (un)preprare clocks on
suspend/resume, and check the result of it.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
Ensure we notice if the clock cannot be enabled for any reason and pass
the error down.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
Use devm_clk_get() to make cleanup paths simpler.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
devm_request_and_ioremap() returns NULL on error, it doesn't return an
ERR_PTR(). This patch fixes it by switching to devm_ioremap_resource()
which is the prefered function anyway.
Fixes: 142168eba9 ('spi: bcm63xx-hsspi: add bcm63xx HSSPI driver')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
Add a driver for the High Speed SPI controller found on newer BCM63XX SoCs.
It does feature some new modes like 3-wire or dual spi, but neither of it
is currently implemented.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
Jonas Gorski