The nxp_fspi_default_setup() is only ever called from nxp_fspi_probe(),
where the IP clock are initially disabled. Drop the second disabling of
clock to prevent clock enable/disable imbalance reported by clock core:
"
clk qspi_root_clk already disabled
"
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
The i.MX8M Mini and i.MX8M Plus flexspi IPs are compatible with one
another, however the linux kernel DT uses separate compatible string
for each SoC. Add the missing i.MX8MP compatible into this driver.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Errata ERR050568 description says that "Flash access by FlexSPI AHB
command may not work with platform frequency equal to 300 MHz" on
LS1028A.
By default, smaller length reads(equal to RX FIFO size) are done by IP
bus and larger length reads using AHB bus. For adding errata workaround,
use IP bus to read entire flash contents and disable AHB path when
platform frequency is 300Mhz.
Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Add support for disabling AHB bus and read entire flash contents via IP
bus only. Please note, this enables IP bus read using a quirk which can
be enabled directly in device-type data or in existence of an errata
where AHB bus may need to be disabled.
Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Import linux commit 007773e16a6f ("spi: nxp-fspi: Ensure width is
respected in spi-mem operations") to fix SPI access on boards which
don't have all SPI I/O lines connected to the flash.
Since commit 71025f013c ("mtd: spi-nor-core: Rework hwcaps selection")
u-boot figures out the capabilities by looking at spi_mem_supports_op().
The FlexSPI driver doesn't take the board layout into account. Fix that.
Fixes: 383fded70c ("spi: nxp_fspi: new driver for the FlexSPI controller")
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
On the i.MX8M Mini, ret = clk_set_rate() sets ret to the value of the
rate the clock was able to set. When checking for errors, it only
checks that it is not NULL. Since positive numbers are not errors,
only check for negative numbers when handling errors.
Fixes: 383fded70c ("spi: nxp_fspi: new driver for the FlexSPI controller")
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Pratyush Yadav <p.yadav@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This name is far too long. Rename it to remove the 'data' bits. This makes
it consistent with the platdata->plat rename.
Signed-off-by: Simon Glass <sjg@chromium.org>
We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).
Rename some of the latter variables to end with 'plat' for consistency.
Signed-off-by: Simon Glass <sjg@chromium.org>
This construct is quite long-winded. In earlier days it made some sense
since auto-allocation was a strange concept. But with driver model now
used pretty universally, we can shorten this to 'auto'. This reduces
verbosity and makes it easier to read.
Coincidentally it also ensures that every declaration is on one line,
thus making dtoc's job easier.
Signed-off-by: Simon Glass <sjg@chromium.org>
CONFIG_IS_ENABLED() takes the kconfig name without the CONFIG_ prefix,
e.g. CONFIG_IS_ENABLED(CLK) for CONFIG_CLK. Some of these were being
fixed every now and then, see:
commit 71ba2cb0d6 ("board: stm32mp1: correct CONFIG_IS_ENABLED usage for LED")
commit a5ada25e42 ("rockchip: clk: fix wrong CONFIG_IS_ENABLED handling")
commit 5daf6e56d3 ("common: console: Fix duplicated CONFIG in silent env callback")
commit 48bfc31b64 ("MIPS: bootm: Fix broken boot_env_legacy codepath")
Fix all files found by `git grep "CONFIG_IS_ENABLED(CONFIG"` by running
':%s/CONFIG_IS_ENABLED(CONFIG_\(\w+\))/CONFIG_IS_ENABLED(\1)/g' in vim.
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Board gets reset when performing burst read/write operations. On the
other hand, no such behaviour is observed on small size operations.
In Linux, readl_poll_timeout API already adds delay of 1us which is
further skipped in U-boot. Hence, use new "readl_poll_sleep_timeout" API
which adds delay alongwith timeout functionality.
Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
Most files don't need this header and it pulls in quite of lots of stuff,
malloc() in particular. Drop it.
Signed-off-by: Simon Glass <sjg@chromium.org>
This is a port of the kernel's spi-nxp-fspi driver. It uses the new
spi-mem interface and does not expose the more generic spi-xfer
interface. The source was taken from the v5.3-rc3 tag.
The port was straightforward:
- remove the interrupt handling and the completion by busy polling the
controller
- remove locks
- move the setup of the memory windows into claim_bus()
- move the setup of the speed into set_speed()
- port the device tree bindings from the original fspi_probe() to
ofdata_to_platdata()
There were only some style change fixes, no change in any logic. For
example, there are busy loops where the return code is not handled
correctly, eg. only prints a warning with WARN_ON(). This port
intentionally left most functions unchanged to ease future bugfixes.
This was tested on a custom LS1028A board. Because the LS1028A doesn't
have proper clock framework support, changing the clock speed was not
tested. This also means that it is not possible to change the SPI
speed on LS1028A for now (neither is it possible in the linux driver).
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Kuldeep Singh <kuldeep.singh@nxp.com>
