The k210 driver is selected by sandbox_defconfig.
Building the sandbox on 32bit systems fails with:
test/dm/k210_pll.c: In function ‘dm_test_k210_pll_calc_config’:
include/linux/bitops.h:11:38: warning:
left shift count >= width of type [-Wshift-count-overflow]
11 | #define BIT(nr) (1UL << (nr))
| ^~
test/dm/k210_pll.c:36:54: note: in expansion of macro ‘BIT’
36 | error = abs((error - BIT(32))) >> 16;
| ^~~
Use the BIT_ULL() macro to create a u64 value.
Replace abs() by abs64() to get correct results on 32bit system
Apply the same for the unit test.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
"kendryte" is the marketing name for the K210 RISC-V SoC produced by
Canaan Inc. Rather than "kendryte,k210", use the usual "canaan,k210"
vendor,SoC compatibility string format in the device tree files and
use the SoC name for file names.
With these changes, the device tree files are more in sync with the
Linux kernel DTS and drivers, making uboot device tree usable by the
kernel.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
In some cases, the best config cannot be used because the VCO would be
out-of-spec. In these cases, we may need to try a worse combination of r/od
in order to find the best representable config. This also adds a few test
cases to catch this and other (possible) unlikely errors.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Having to copy-paste the same 3 lines makes adding new test cases
error-prone. Use a macro.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
This pll code is primarily based on the code from the kendryte standalone
sdk in lib/drivers/sysctl.c. k210_pll_calc_config is roughly analogous to
the algorithm used to set the pll frequency, but it has been completely
rewritten to be fixed-point based.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
CC: Lukasz Majewski <lukma@denx.de>
