On Tue, 18 Dec 2007 18:57:24 +0900 Nobuhiro Iwamatsu <[email protected]> wrote:
> There is a device that doesn't work when P2CCLK's bit of TI PC1520 was disable.
> This patch supports P2CCLK bit enabler for TI PC1520.
>
> ...
>
> config YENTA_TOSHIBA
> default y
> bool "Special initialization for Toshiba ToPIC bridges" if EMBEDDED
> diff --git a/drivers/pcmcia/ti113x.h b/drivers/pcmcia/ti113x.h
> index d29657b..ea749e8 100644
> --- a/drivers/pcmcia/ti113x.h
> +++ b/drivers/pcmcia/ti113x.h
> @@ -59,6 +59,7 @@
> #define TI122X_SCR_SER_STEP 0xc0000000
> #define TI122X_SCR_INTRTIE 0x20000000
> #define TIXX21_SCR_TIEALL 0x10000000
> +#define TI122X_SCR_P2CCLK 0x08000000
> #define TI122X_SCR_CBRSVD 0x00400000
> #define TI122X_SCR_MRBURSTDN 0x00008000
> #define TI122X_SCR_MRBURSTUP 0x00004000
> @@ -822,6 +823,13 @@ static int ti12xx_override(struct yenta_socket *socket)
> printk(KERN_INFO "Yenta: Enabling burst memory read transactions\n");
> val |= TI122X_SCR_MRBURSTUP;
> }
> +
> +#ifdef CONFIG_YENTA_TI_P2CCLK
> + if ( !(val & TI122X_SCR_P2CCLK)) {
> + printk(KERN_INFO "Yenta: Clock generated by internal oscillator\n");
> + val |= TI122X_SCR_P2CCLK;
> + }
> +#endif
> if (val_orig != val)
> config_writel(socket, TI113X_SYSTEM_CONTROL, val);
It would be much better if we cold do this without the config option: just
detect the appropriate device and make it work.
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