Most register values for the chip select setup depend on the frequency
of the fck clock.
So add a hint that the values setup by the bootloader might differ from
the right setup for Linux if the bootloader uses a different frequency.

Signed-off-by: Uwe Kleine-König <u.kleine-koe...@pengutronix.de>
---
 drivers/memory/Kconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig
index c6a644b22af4..1414dd53be57 100644
--- a/drivers/memory/Kconfig
+++ b/drivers/memory/Kconfig
@@ -64,6 +64,9 @@ config OMAP_GPMC_DEBUG
          Enables verbose debugging mostly to decode the bootloader provided
          timings. Enable this during development to configure devices
          connected to the GPMC bus.
+         Note that you cannot just tweak your device tree until the registers
+         setup by linux match what the bootloader did because that one might
+         use a different fck frequency influencing most register settings.
 
 config MVEBU_DEVBUS
        bool "Marvell EBU Device Bus Controller"
-- 
2.6.0

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