Commit 8c03b8bf authored by Matthias Schiffer's avatar Matthias Schiffer Committed by Marc Kleine-Budde
Browse files

can: m_can: pci: fix incorrect reference clock rate 

When testing the CAN controller on our Ekhart Lake hardware, we
determined that all communication was running with twice the configured
bitrate. Changing the reference clock rate from 100MHz to 200MHz fixed
this. Intel's support has confirmed to us that 200MHz is indeed the
correct clock rate.

Fixes: cab7ffc0 ("can: m_can: add PCI glue driver for Intel Elkhart Lake")
Link: https://lore.kernel.org/all/c9cf3995f45c363e432b3ae8eb1275e54f009fc8.1636967198.git.matthias.schiffer@ew.tq-group.com


Cc: stable@vger.kernel.org
Signed-off-by: default avatarMatthias Schiffer <matthias.schiffer@ew.tq-group.com>
Acked-by: default avatarJarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: default avatarJarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent d737de2d

drivers/net/can/m_can/m_can_pci.c

+1 −1
Original line number Diff line number Diff line
@@ -18,7 +18,7 @@ 


#define M_CAN_PCI_MMIO_BAR		0



#define M_CAN_CLOCK_FREQ_EHL		100000000

#define M_CAN_CLOCK_FREQ_EHL		200000000

#define CTL_CSR_INT_CTL_OFFSET		0x508



struct m_can_pci_priv {