On 02/25/2016 02:38 PM, Derald D. Woods wrote:
On Thu, Feb 25, 2016 at 09:11:24AM +0100, Michal Simek wrote:
On 25.2.2016 05:47, Derald D. Woods wrote:
On Wed, Feb 24, 2016 at 12:26:09PM +0100, Michal Simek wrote:
On 24.2.2016 11:56, Adam Ford wrote:
On Tue, Feb 23, 2016 at 12:38 AM, Simon Glass <s...@chromium.org> wrote:
Hi Michal,
On 22 February 2016 at 00:40, Michal Simek <michal.si...@xilinx.com> wrote:
On 19.2.2016 21:55, Simon Glass wrote:
Hi Michal,
On 16 February 2016 at 08:17, Michal Simek <michal.si...@xilinx.com> wrote:
reg-offset is the part of standard 8250 binding in the kernel.
It is shifting start of address space by reg-offset.
On Xilinx platform this offset is typically 0x1000.
Signed-off-by: Michal Simek <michal.si...@xilinx.com>
---
drivers/serial/ns16550.c | 6 ++++--
include/ns16550.h | 1 +
2 files changed, 5 insertions(+), 2 deletions(-)
Reviewed-by: Simon Glass <s...@chromium.org>
Do you support the debug UART feature on your boards?
yes. I do support it but there you can put just address plus offset and
there is no reason to add one more option to Kconfig.
But let me know if you think that this is incorrect flow.
This patch seems to break my OMAP3 board. Does anyone know if I need
to set a certain offset for OMAP3 to make this work (and where is the
right place for it) ?
Are you using DT init? Check your DT description if there is reg-offset
property. I expect if your board worked before and you remove this
property it will start to work again.
I am seeing the same problem with my BeagleBoard Rev. C4. There is
something common, to more than one board, happening with this commit.
You should enable debug console and send the log.
Do you have enough space for malloc?
I will have little time this weekend to go further. Some things will
need to be un-configured to have enough space. I am around 7 KiB over
with DEBUG enabled.
I'm not quite sure what exactly is going wrong here - maybe some asm
code is accessing the fields without proper offset generation?
Either way, the patch below seems to fix the issue for me (on beaglebone):
diff --git a/include/ns16550.h b/include/ns16550.h
index 5eeacd6..1311f4c 100644
--- a/include/ns16550.h
+++ b/include/ns16550.h
@@ -54,9 +54,9 @@
*/
struct ns16550_platdata {
unsigned long base;
- int reg_offset;
int reg_shift;
int clock;
+ int reg_offset;
};
struct udevice;
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