Hi, this short series supports S2RAM on R-Car E3 (r8a77990) / Ebisu by: * Upporting description of BD9571 PMIC in DT from BSP v3.9.2 * Adding DDR0 backpo power configuration to that description Simon Horman (1): arm64: dts: renesas: ebisu: Add PMIC DDR0 Backup Power config Takeshi Kihara (1): arm64: dts: renesas: r8a77990-ebisu: Add BD9571 PMIC arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts | 27 ++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) Tested using the following procedure with patches applied on renesas-devel-20190308-v5.0 and kernel compiled using renesas_defconfig. 1. Add no_console_suspend to kernel command line 2. Boot system 3. # echo on > /sys/bus/i2c/drivers/bd9571mwv/8-0030/bd9571mwv-regulator.0.auto/backup_mode 4. Toggle SW23 to off position System suspends with following displayed on console [ 91.486537] PM: suspend entry (deep) [ 91.490281] PM: Syncing filesystems ... done. [ 91.500460] Freezing user space processes ... (elapsed 0.001 seconds) done. [ 91.509392] OOM killer disabled. [ 91.512679] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done. [ 91.531235] ravb e6800000.ethernet eth0: Link is Down [ 91.670747] Disabling non-boot CPUs ... [ 91.676106] CPU1: shutdown [ 91.678932] psci: CPU1 killed. 5. Toggle SW23 to on position System resumes with the following output to the console INFO: ARM GICv2 driver initialized NOTICE: BL2: R-Car Gen3 Initial Program Loader(CA53) Rev.2.0.1 NOTICE: BL2: PRR is R-Car E3 Ver.1.0 NOTICE: BL2: PLL1 nonSSCG Clock select NOTICE: BL2: Board is Ebisu-4D Rev.1.0 NOTICE: BL2: Boot device is HyperFlash(80MHz) NOTICE: BL2: LCM state is CM NOTICE: BL2: DDR1856(rev.0.11) NOTICE: BL2: [WARM_BOOT] NOTICE: BL2: DRAM Split is OFF NOTICE: BL2: QoS is default setting(rev.0.05) NOTICE: BL2: DRAM refresh interval 3.9 usec NOTICE: BL2: CH0: 400000000 - 47fffffff, 2 GiB NOTICE: BL2: FDT at 0xe63145d8 NOTICE: BL2: v2.0(release):v2.0-986-gc48d02bade88-dirty NOTICE: BL2: Built : 09:27:42, Mar 11 2019 NOTICE: BL2: Normal boot INFO: BL2: Doing platform setup [ 91.683834] Enabling non-boot CPUs ... [ 91.688141] Detected VIPT I-cache on CPU1 [ 91.688231] CPU1: Booted secondary processor 0x0000000001 [0x410fd034] [ 91.689094] cache: parent cpu1 should not be sleeping [ 91.705420] CPU1 is up [ 91.840419] usb usb2: root hub lost power or was reset [ 91.845755] usb usb1: root hub lost power or was reset [ 91.973264] Micrel KSZ9031 Gigabit PHY e6800000.ethernet-ffffffff:00: attached PHY driver [Micrel KSZ9031 Gigabit PHY] (mii_bus:phy_addr=e6800000.ethernet-ffffffff:00, irq=169) [ 92.064085] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 92.070904] OOM killer enabled. [ 92.074096] Restarting tasks ... [ 92.074158] [drm] No driver support for vblank timestamp query. [ 92.085011] done. [ 92.089628] PM: suspend exit [ 92.096382] thc63lvd1024 lvds-decoder: Linked as a consumer to regulator.2 [ 92.103645] thc63lvd1024 lvds-decoder: Dropping the link to regulator.2 [ 97.553658] ravb e6800000.ethernet eth0: Link is Up - 1Gbps/Full - flow control off -- 2.11.0
