diff options
| author | Dave Airlie <airlied@redhat.com> | 2017-03-28 17:34:19 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2017-03-28 17:34:19 +1000 |
| commit | e5c1ff14757afe21733ddee9cc4bbaeaeadbf803 (patch) | |
| tree | 0da1c9aaf772fac30fe68590a4ca1c3dd439cebd /arch/arm/mach-at91/pm.c | |
| parent | 65d1086c44791112188f6aebbdc3a27cab3736d3 (diff) | |
| parent | c02ed2e75ef4c74e41e421acb4ef1494671585e8 (diff) | |
Backmerge tag 'v4.11-rc4' into drm-next
Linux 4.11-rc4
The i915 GVT team need the rc4 code to base some more code on.
Diffstat (limited to 'arch/arm/mach-at91/pm.c')
| -rw-r--r-- | arch/arm/mach-at91/pm.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index 3d89b7905bd9..a277981f414d 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -289,6 +289,22 @@ 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. */ @@ -323,7 +339,7 @@ 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*/ } }; |