[PATCH-V4 3/3] ARM: OMAP: Make OMAP clocksource source selection using kernel param
Kevin Hilman
khilman at ti.com
Thu Apr 26 14:33:16 EDT 2012
Vaibhav Hiremath <hvaibhav at ti.com> writes:
> Current OMAP code supports couple of clocksource options based
> on compilation flag (CONFIG_OMAP_32K_TIMER). The 32KHz sync-timer
> and a gptimer which can run on 32KHz or system clock (e.g 38.4 MHz).
[...]
> +
> + sync32k_ick = clk_get(NULL, "omap_32ksync_ick");
> + if (!IS_ERR(sync32k_ick))
> + clk_enable(sync32k_ick);
> +
> + sync32k_cnt_reg = base + OMAP2_32KSYNCNT_CR_OFF;
> +
> + /*
> + * 120000 rough estimate from the calculations in
> + * __clocksource_updatefreq_scale.
> + */
> + clocks_calc_mult_shift(&persistent_mult, &persistent_shift,
> + 32768, NSEC_PER_SEC, 120000);
> +
> + ret = clocksource_mmio_init(base, "32k_counter", 32768, 250, 32,
> + clocksource_mmio_readl_up);
After discussing this a bit with Vaibhav offline, we found that 'base'
here should be sync32k_cnt_reg.
Can you guys that were seeing the hang confirm that that fixes the
issue?
If so, please reply with your Tested-by.
Thanks,
Kevin
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