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authorClaudiu Beznea <claudiu.beznea@microchip.com>2022-01-13 17:48:54 +0300
committerNicolas Ferre <nicolas.ferre@microchip.com>2022-02-25 14:36:25 +0300
commit9584e7263e9ebcd94b184dc3efc847355a624220 (patch)
tree9c1c07f2a65d6329d072f7fcfe0965b865f282d6 /include/soc/at91
parent9a0775c9cd3d89d1fe957a137131681a33f5736b (diff)
downloadlinux-9584e7263e9ebcd94b184dc3efc847355a624220.tar.xz
ARM: at91: PM: add cpu idle support for sama7g5
Add CPU idle support for SAMA7G5. Support will make use of PMC_CPU_RATIO register to divide the CPU clock by 16 before switching it to idle and use automatic self-refresh option of DDR controller. Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Acked-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com> Link: https://lore.kernel.org/r/20220113144900.906370-5-claudiu.beznea@microchip.com
Diffstat (limited to 'include/soc/at91')
-rw-r--r--include/soc/at91/sama7-ddr.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/soc/at91/sama7-ddr.h b/include/soc/at91/sama7-ddr.h
index fee1b11bddca..9e17247474fa 100644
--- a/include/soc/at91/sama7-ddr.h
+++ b/include/soc/at91/sama7-ddr.h
@@ -53,6 +53,7 @@
#define UDDRC_STAT_OPMODE_MSK (0x7 << 0) /* Operating mode mask */
#define UDDRC_PWRCTL (0x30) /* UDDRC Low Power Control Register */
+#define UDDRC_PWRCTL_SELFREF_EN (1 << 0) /* Automatic self-refresh */
#define UDDRC_PWRCTL_SELFREF_SW (1 << 5) /* Software self-refresh */
#define UDDRC_DFIMISC (0x1B0) /* UDDRC DFI Miscellaneous Control Register */