Hi, have been hunting down a bug on exynos5250-snow which caused both HDMI and LVDS output to be broken after the second resume (with suspend to mem, but not to idle). What I have found is that when powering down the DISP1 power domain while suspending for the second time, the contents of the SRC_TOP3 register change from 0x1110550 to 0x1110500. IIUIC, this means that ACLK_200_DISP1 is reparented to XXTI. When the CPU comes up again, that register contains 0x1110550 again, but it's set to 0x1110500 by the code that restores clk registers when resuming: First suspend: exynos_pd_power: SRC_TOP3 1110550 disp1-power-domain@100440A0 - before exynos_pd_power: SRC_TOP3 1110550 disp1-power-domain@100440A0 - after exynos5250_clk_suspend: SRC_TOP3 1110550 exynos5250_clk_resume: SRC_TOP3 1110550 - before exynos5250_clk_resume: SRC_TOP3 1110550 - after exynos_pd_power: SRC_TOP3 1110550 disp1-power-domain@100440A0 - before exynos_pd_power: SRC_TOP3 1110550 disp1-power-domain@100440A0 - after Second suspend: exynos_pd_power: SRC_TOP3 1110550 disp1-power-domain@100440A0 - before exynos_pd_power: SRC_TOP3 1110500 disp1-power-domain@100440A0 - after exynos5250_clk_suspend: SRC_TOP3 1110500 exynos5250_clk_resume: SRC_TOP3 1110550 - before exynos5250_clk_resume: SRC_TOP3 1110500 - after exynos_pd_power: SRC_TOP3 1110500 disp1-power-domain@100440A0 - before exynos_pd_power: SRC_TOP3 1110500 disp1-power-domain@100440A0 - after I have no idea of why it happens on the second suspend, and also don't know why it doesn't happen when suspending to idle. Any ideas? Thanks, Tomeu -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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