* [PATCH] Documentation: boards: stm32mp: document boot mode strap pins
@ 2019-10-30 9:27 Ahmad Fatoum
2019-11-04 8:05 ` Sascha Hauer
0 siblings, 1 reply; 2+ messages in thread
From: Ahmad Fatoum @ 2019-10-30 9:27 UTC (permalink / raw)
To: barebox
The evaluation kits have 2P DIP-Switches for boot mode selection.
Document them.
Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
---
Documentation/boards/stm32mp.rst | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/Documentation/boards/stm32mp.rst b/Documentation/boards/stm32mp.rst
index d4429aae2765..f93ec04eb04d 100644
--- a/Documentation/boards/stm32mp.rst
+++ b/Documentation/boards/stm32mp.rst
@@ -62,3 +62,22 @@ An appropriate image for the boot media can be generated with following
}
Image can then be flashed on e.g. a SD-Card.
+
+Boot source selection
+---------------------
+
+The STM32MP BootROM samples three boot pins at reset. Usually BOOT1 is
+pulled down and BOOT0 and BOOT2 are connected to a 2P DIP switch::
+
+ +-------+
+ BOOT2 | O O-- |
+ BOOT0 | N O-- | <---- SDMMC
+ +-------+
+ +-------+
+ BOOT2 | O O-- |
+ BOOT0 | N --O | <---- QSPI-NOR Flash
+ +-------+
+ +-------+
+ BOOT2 | O --O |
+ BOOT0 | N --O | <---- DFU on UART and USB OTG
+ +-------+
--
2.20.1
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* Re: [PATCH] Documentation: boards: stm32mp: document boot mode strap pins
2019-10-30 9:27 [PATCH] Documentation: boards: stm32mp: document boot mode strap pins Ahmad Fatoum
@ 2019-11-04 8:05 ` Sascha Hauer
0 siblings, 0 replies; 2+ messages in thread
From: Sascha Hauer @ 2019-11-04 8:05 UTC (permalink / raw)
To: Ahmad Fatoum; +Cc: barebox
On Wed, Oct 30, 2019 at 10:27:31AM +0100, Ahmad Fatoum wrote:
> The evaluation kits have 2P DIP-Switches for boot mode selection.
> Document them.
>
> Signed-off-by: Ahmad Fatoum <ahmad@a3f.at>
> ---
> Documentation/boards/stm32mp.rst | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
Applied, thanks
Sascha
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