[PATCH v3 4/4] can: flexcan: add vf610 support for FlexCAN
From: stefan@agner.ch (Stefan Agner)
Date: 2014-07-29 07:28:45
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Am 2014-07-28 18:28, schrieb Marc Kleine-Budde:
On 07/28/2014 06:20 PM, Stefan Agner wrote:quoted
I'm not sure whether you really want to keep the FLEXCAN_CTRL_ERR_STATE commented out...No, please remove this change and redo the test.
Ok, removed that change and did the tests again:
== Wrong Bitrate test
[ 146.485022] flexcan 40020000.flexcan can0: bitrate error 0.7%
[ 148.401793] flexcan 40020000.flexcan can0: writing ctrl=0x17092001
[ 148.408263] flexcan 40020000.flexcan can0: flexcan_set_bittiming:
mcr=0x5980000f ctrl=0x17092001
[ 148.408298] flexcan 40020000.flexcan can0: flexcan_chip_start:
writing mcr=0x79a20208
[ 148.408328] flexcan 40020000.flexcan can0: flexcan_chip_start:
writing ctrl=0x1709ac51
[ 148.414373] flexcan 40020000.flexcan can0: flexcan_chip_start:
reading mcr=0x60a20208 ctrl=0x1709ac51
^---- Initialization
[ 152.968685] flexcan_irq, esr=00040080
[ 152.972386] flexcan_irq, ctrl=1709ac51
[ 155.488623] flexcan_irq, esr=00040080
[ 155.492326] flexcan_irq, ctrl=1709ac51
^---- Two messages with right bitrate
[ 171.014124] flexcan_irq, esr=00058d0a
[ 171.017823] flexcan_irq, ctrl=1709ac51
^---- One message with wrong bitrate
[ 171.021631] flexcan 40020000.flexcan can0: Error Warning IRQ
[ 171.021660] flexcan 40020000.flexcan can0: Error Passive IRQ
# ./candump -e any,0:0,#FFFFFFFF
can0 1F334455 [8] 11 22 33 44 55 66 77 88
can0 1F334455 [8] 11 22 33 44 55 66 77 88
can0 20000004 [8] 00 10 00 00 00 00 00 00 ERRORFRAME
controller-problem{rx-error-passive}
== Loopback test
[ 464.003776] flexcan 40020000.flexcan can0: writing ctrl=0x17092051
[ 464.010005] flexcan 40020000.flexcan can0: flexcan_set_bittiming:
mcr=0x5980000f ctrl=0x17092051
[ 464.010035] flexcan 40020000.flexcan can0: flexcan_chip_start:
writing mcr=0x79a20208
[ 464.010064] flexcan 40020000.flexcan can0: flexcan_chip_start:
writing ctrl=0x1709ac51
[ 464.010199] flexcan 40020000.flexcan can0: flexcan_chip_start:
reading mcr=0x60a20208 ctrl=0x1709ac51
[ 464.011682] IPv6: ADDRCONF(NETDEV_CHANGE): can0: link becomes ready
[ 470.970133] flexcan_irq, esr=00064252
[ 470.974833] flexcan_irq, ctrl=1709ac51
[ 470.980171] flexcan 40020000.flexcan can0: Error Warning IRQ
[ 470.980203] flexcan 40020000.flexcan can0: Error Passive IRQ
[ 470.980328] flexcan_irq, esr=00000034
[ 470.984998] flexcan_irq, ctrl=1709ac51
# ./candump -e any,0:0,#FFFFFFFF
can0 20000044 [8] 00 10 00 00 00 00 00 00 ERRORFRAME
controller-problem{rx-error-passive}
bus-off
--
Stefan