Merge remote-tracking branch 'aosp/android-4.4' into kernel-4.4

[android-x86/kernel.git] / arch / arm / mach-at91 / pm.c

diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 23726fb..d687f86 100644 (file)
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -286,6 +286,22 @@ static void at91_ddr_standby(void)
                at91_ramc_write(1, AT91_DDRSDRC_LPR, saved_lpr1);
 }
 
+static void sama5d3_ddr_standby(void)
+{
+       u32 lpr0;
+       u32 saved_lpr0;
+
+       saved_lpr0 = at91_ramc_read(0, AT91_DDRSDRC_LPR);
+       lpr0 = saved_lpr0 & ~AT91_DDRSDRC_LPCB;
+       lpr0 |= AT91_DDRSDRC_LPCB_POWER_DOWN;
+
+       at91_ramc_write(0, AT91_DDRSDRC_LPR, lpr0);
+
+       cpu_do_idle();
+
+       at91_ramc_write(0, AT91_DDRSDRC_LPR, saved_lpr0);
+}
+
 /* We manage both DDRAM/SDRAM controllers, we need more than one value to
  * remember.
  */
@@ -320,7 +336,7 @@ static const struct of_device_id const ramc_ids[] __initconst = {
        { .compatible = "atmel,at91rm9200-sdramc", .data = at91rm9200_standby },
        { .compatible = "atmel,at91sam9260-sdramc", .data = at91sam9_sdram_standby },
        { .compatible = "atmel,at91sam9g45-ddramc", .data = at91_ddr_standby },
-       { .compatible = "atmel,sama5d3-ddramc", .data = at91_ddr_standby },
+       { .compatible = "atmel,sama5d3-ddramc", .data = sama5d3_ddr_standby },
        { /*sentinel*/ }
 };