diff options
| author | Wolfram Sang <w.sang@pengutronix.de> | 2010-04-27 05:25:27 -0400 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-04-28 02:54:58 -0400 |
| commit | b0c06027c7d18d99e6f5e81382a7f06a8080b084 (patch) | |
| tree | d0169def1073895fddca3d20c1df515b01a07c5d /drivers/serial/mpc52xx_uart.c | |
| parent | 3913fd5ed42c990c20036ef5c90e7987a9dd1ad1 (diff) | |
serial/mpc52xx_uart: Drop outdated comments
Most things mentioned are either obsolete (platform-support) or wrong (device
numbering, DCD spport) these days. The remaining rest is obvious.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/serial/mpc52xx_uart.c')
| -rw-r--r-- | drivers/serial/mpc52xx_uart.c | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index 3119fddaedb5..a176ab4bd65b 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c | |||
| @@ -29,39 +29,6 @@ | |||
| 29 | * kind, whether express or implied. | 29 | * kind, whether express or implied. |
| 30 | */ | 30 | */ |
| 31 | 31 | ||
| 32 | /* Platform device Usage : | ||
| 33 | * | ||
| 34 | * Since PSCs can have multiple function, the correct driver for each one | ||
| 35 | * is selected by calling mpc52xx_match_psc_function(...). The function | ||
| 36 | * handled by this driver is "uart". | ||
| 37 | * | ||
| 38 | * The driver init all necessary registers to place the PSC in uart mode without | ||
| 39 | * DCD. However, the pin multiplexing aren't changed and should be set either | ||
| 40 | * by the bootloader or in the platform init code. | ||
| 41 | * | ||
| 42 | * The idx field must be equal to the PSC index (e.g. 0 for PSC1, 1 for PSC2, | ||
| 43 | * and so on). So the PSC1 is mapped to /dev/ttyPSC0, PSC2 to /dev/ttyPSC1 and | ||
| 44 | * so on. But be warned, it's an ABSOLUTE REQUIREMENT ! This is needed mainly | ||
| 45 | * fpr the console code : without this 1:1 mapping, at early boot time, when we | ||
| 46 | * are parsing the kernel args console=ttyPSC?, we wouldn't know which PSC it | ||
| 47 | * will be mapped to. | ||
| 48 | */ | ||
| 49 | |||
| 50 | /* OF Platform device Usage : | ||
| 51 | * | ||
| 52 | * This driver is only used for PSCs configured in uart mode. The device | ||
| 53 | * tree will have a node for each PSC with "mpc52xx-psc-uart" in the compatible | ||
| 54 | * list. | ||
| 55 | * | ||
| 56 | * By default, PSC devices are enumerated in the order they are found. However | ||
| 57 | * a particular PSC number can be forces by adding 'device_no = <port#>' | ||
| 58 | * to the device node. | ||
| 59 | * | ||
| 60 | * The driver init all necessary registers to place the PSC in uart mode without | ||
| 61 | * DCD. However, the pin multiplexing aren't changed and should be set either | ||
| 62 | * by the bootloader or in the platform init code. | ||
| 63 | */ | ||
| 64 | |||
| 65 | #undef DEBUG | 32 | #undef DEBUG |
| 66 | 33 | ||
| 67 | #include <linux/device.h> | 34 | #include <linux/device.h> |