zhangfei gao wrote:
>
> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> index 913555e..32dcac9 100644
> --- a/drivers/mmc/host/sdhci.c
> +++ b/drivers/mmc/host/sdhci.c
[...]
> @@ -1001,13 +1001,23 @@ static void sdhci_set_clock(struct sdhci_host
> *host, unsigned int clock)
> if (clock == 0)
> goto out;
>
> - for (div = 1;div < 256;div *= 2) {
> - if ((host->max_clk / div) <= clock)
> - break;
> + if (host->version >= SDHCI_SPEC_300)
> + max_div = 2046;
> + else
> + max_div = 256;
> +
> + if(host->max_clk <= clock)
> + div = 1;
> + else {
> + for (div = 2; div < max_div; div += 2) {
> + if ((host->max_clk / div) <= clock)
> + break;
> + }
This isn't correct. The divisor must be a power of two for 2.00
controllers.
David
--
David Vrabel, Senior Software Engineer, Drivers
CSR, Churchill House, Cambridge Business Park, Tel: +44 (0)1223 692562
Cowley Road, Cambridge, CB4 0WZ http://www.csr.com/
Member of the CSR plc group of companies. CSR plc registered in England and Wales, registered number 4187346, registered office Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, United Kingdom
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