[PATCH v1 03/10] clk: at91: pmc: Support backup for programmable clocks
From: Romain Izard <hidden>
Date: 2017-09-08 15:39:11
Also in:
linux-clk, linux-iio, linux-pwm, linux-serial, lkml
Subsystem:
common clk framework, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Linus Torvalds
From: Romain Izard <redacted> Save and restore the System Clock and Programmable Clock register for the backup use case. Signed-off-by: Romain Izard <redacted> --- drivers/clk/at91/pmc.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
index 07dc2861ad3f..5421b03553ec 100644
--- a/drivers/clk/at91/pmc.c
+++ b/drivers/clk/at91/pmc.c@@ -66,6 +66,7 @@ static struct u32 pcr[PMC_MAX_IDS]; u32 audio_pll0; u32 audio_pll1; + u32 pckr[3]; } pmc_cache; void pmc_register_id(u8 id)
@@ -103,6 +104,8 @@ static int pmc_suspend(void) regmap_read(pmcreg, AT91_PMC_PCR, &pmc_cache.pcr[registered_ids[i]]); } + for (i = 0; i < 3; i++) + regmap_read(pmcreg, AT91_PMC_PCKR(i), &pmc_cache.pckr[i]); return 0; }
@@ -143,6 +146,8 @@ static void pmc_resume(void) pmc_cache.pcr[registered_ids[i]] | AT91_PMC_PCR_CMD); } + for (i = 0; i < 3; i++) + regmap_write(pmcreg, AT91_PMC_PCKR(i), pmc_cache.pckr[i]); if (pmc_cache.uckr & AT91_PMC_UPLLEN) mask |= AT91_PMC_LOCKU;
--
2.11.0