[PATCH 2/2] memory: omap-gpmc: expand the description of the debug facility

Uwe Kleine-König u.kleine-koenig at pengutronix.de
Tue Oct 6 13:07:50 PDT 2015

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-koenig at 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.
 	bool "Marvell EBU Device Bus Controller"

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