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can: m_can: pci: fix incorrect reference clock rate

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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: cab7ffc032 ("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: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Matthias Schiffer 2021-11-15 10:18:49 +01:00 committed by Marc Kleine-Budde
parent d737de2d7c
commit 8c03b8bff7
1 changed files with 1 additions and 1 deletions
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2
drivers/net/can/m_can/m_can_pci.c
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@ -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 {