Hi all,
We are trying to enable UART1 and UART2 in DM6467 EVM. We are using
combined kernel tree which has DM355, Davinci and DavinciHD.
What all changes do we need to do in kernel files for using UART1 and UART2?
We found that this kernel already contains the support for all the
UART'S. So we just enable the number of UART in make menuconfig from 1
to 2. We also changed the PINMUX 1 setting for uart. PINMUX 1 register
(Base address 0x1c40004) originally read "0x2C" i.e Uart1 in GPIO mode,
we changed it's value to "0x24" i.e. Uart1 in uart mode without flow
control. Uart0 is in Uart mode with modem control and Uart2 in CIR
mode. While performing loop back on Uart1 we are getting following error.
"8250.c: Too much work for irq41."
Commands we use to perform loopback operation of UART1 are:
"cat /dev/tts/1"
"echo a5 > /dev/tts/1"
Also one surprising thing is that type detected for both UART's is
different, detected chips are as follows:
UART0: ST16654
UART1: ST16650v2
Is this detected chip proper?
Regards,
Deepika
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