u-boot/arch/sandbox/dts
Mario Six e8d5291824 core: ofnode: Fix translation for #size-cells == 0
Commit 286ede6 ("drivers: core: Add translation in live tree case") made
dev_get_addr always use proper bus translations for addresses read from
the device tree. But this leads to problems with certain busses, e.g.
I2C busses, which run into an error during translation, and hence stop
working.

It turns out that of_translate_address() and fdt_translate_address()
stop the address translation with an error when they're asked to
translate addresses for busses where #size-cells == 0 (comment from
drivers/core/of_addr.c):

 * Note: We consider that crossing any level with #size-cells == 0 to mean
 * that translation is impossible (that is we are not dealing with a value
 * that can be mapped to a cpu physical address). This is not really specified
 * that way, but this is traditionally the way IBM at least do things

To fix this case, we check in both the live-tree and non-live tree-case,
whether the bus of the device whose address is about to be translated
has size-cell size zero. If this is the case, we just read the address
as a plain integer and return it, and only apply bus translations if the
size-cell size if greater than zero.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com>
Reported-by: Martin Fuzzey <mfuzzey@parkeon.com>
Fixes: 286ede6 ("drivers: core: Add translation in live tree case")
Reviewed-by: Simon Glass <sjg@chromium.org>
2018-04-01 22:19:10 +08:00
..
include Makefile: Support include files for .dts files 2014-06-20 11:55:03 -06:00
.gitignore sandbox: ignore sandbox.dtb 2014-05-09 14:51:20 -06:00
cros-ec-keyboard.dtsi cros_ec: exynos: Match up device tree with kernel version 2015-04-18 11:11:16 -06:00
Makefile sandbox: Add 64-bit sandbox 2018-02-18 15:53:48 -07:00
sandbox.dts sandbox: Rename 'num-gpios' property to avoid dtc warning 2018-02-18 15:53:32 -07:00
sandbox64.dts sandbox: Add 64-bit sandbox 2018-02-18 15:53:48 -07:00
sandbox_pmic.dtsi power: extend prefix match to regulator-name property 2017-12-12 19:53:45 -07:00
test.dts core: ofnode: Fix translation for #size-cells == 0 2018-04-01 22:19:10 +08:00