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We found that the DUT will be hanged if we don't set the bit_1 of the
PMUCRU_GATEDIS_CON0. But, from the TRM, there is weird that the bit_1
is set the clk_center1_gating_dis, not clk_pmum0_gating_dis. Is the
TRM incorrect? We need to check it with the IC team and re-clean the
commit message and explain it tomorrow.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>

This patch do following things:
1. Request hresetn_cm0s_pmu_req first then request
   poresetn_cm0s_pmu_req during M0 enable.
2. Do not diable M0 clock for ddr dvfs.
3. Correct the clk_pmum0_gating_dis bit, it is BIT0 not BIT1
4. do not set/clear hclk_noc_pmu_en in M0 code, it does not relate
   to the M0 clock.
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>

When vop is disabled and we read the vop register the system will
hang, so check vop status when we wait for the DMA finish flag to
avoid this sitiuation. This is done by checking for standby, DMA stop
mode, and disabled window states. Any one of these will prevent the
DMA finish flag from triggering.
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>

There is system timer in m0, we can use it to implement a set of
stopwatch functions for measuring timeouts.
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>

The phy pll needs to get 2X frequency to the DDR, so set the
pll_postdiv to 0.
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>

For ddr dfs stable, We need to enable ddr CA training
when do ddr dfs.
Signed-off-by: Lin Huang <hl@rock-chips.com>

This fixes a hang with setting the DRAM rate based on a race condition
with the M0 which sets the DRAM rate. The AP can also starve the M0,
so this also delays the AP reads to the DONE parameter for the M0.
Signed-off-by: Derek Basehore <dbasehore@chromium.org>

This enables per CS training at 666MHz and above for ddrfreq per
vendor recommendation. Since the threshold was used for latency was
the same value, this also adds a new value for that.
Signed-off-by: Derek Basehore <dbasehore@chromium.org>

This patch sets the frequency configuration of the next DRAM DFS index
to the configuration of the current index. This does not perform a
frequency transition. It just configures registers so the training on
resume for both indices will be correct.
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>

We used dcf do ddr frequency scaling, but we just include a dcf
binary, it hard to maintain later, we have M0 compile flow in ATF,
and M0 can also work for ddr frequency scaling, so let's use it.
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>

Since the ATF project, we usually use the mmio_read_32 and
mmio_write_32. And the mmio_write_32, the firse parameter
is ADDR, the second is VALUE. In order to style consistency:

1/ rename readl/writel to mmio_read_32/mmio_write_32
2/ for keeping the same with mmio_write_32 in the ATF project,
   swap the order of the parameters for M0 mmio_write_32
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Lin Huang <hl@rock-chips.com>

when dram frequency below 260MHz, phy master dll may unlock, so
let phy master dll working at dll bypass mode when frequency is
below 260MHz.
Signed-off-by: Lin Huang <hl@rock-chips.com>

we can reuse the dram config from loader, so we can remove dram_init()
and dts_timing_receive() funciton in dram.c, add the dram_set_odt_pd()
function to get the odt and auto power down parameter from kernel.

This also removes the dcf_code_init function to allow the system to
actually boot.
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>

We are duplicating this macro define, and it is useful enough
to be placed in the common place.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Depending on the compiler used, it might try to link in libc even though
it's not required. Stop it from doing that.
Signed-off-by: Patrick Georgi <pgeorgi@google.com>

Some files have incorrect copyright notices, this patch fixes all
files with deviations from the standard notice.

Change-Id: I66b73e78a50a235acb55f1e2ec2052a42c0570d2
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>

Commit b91d935f
("Add CFI debug frame information for ASM functions") modifies the
assembly macros 'func' and 'endfunc' to include CFI debug frame
information.

The rockchip platform uses a custom version of the 'func' macro with the
common 'endfunc' macro. The custom macro wasn't updated in
b91d935f resulting in the following
build error:
  plat/rockchip/rk3399/drivers/pmu/plat_pmu_macros.S: Assembler messages:
  plat/rockchip/rk3399/drivers/pmu/plat_pmu_macros.S:155: Error: .cfi_endproc without corresponding .cfi_startproc
  Makefile:532: recipe for target 'build/rk3399/release/bl31/plat_helpers.o' failed
  make: *** [build/rk3399/release/bl31/plat_helpers.o] Error 1

Fixing this by updating the sram_func macro in the rk3399 port.

Fixes: b91d935f

 ("Add CFI debug frame information for ASM functions")
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>

We have do something for clocks gate.

Fox example as the below:
susped:
clk_gate_con_save();
clk_gate_con_disable();

resume:
clk_gate_con_restore();
--

SO, add the plls_suspend_prepare() and plls_resume_finish() are not
necessary to S2R, that will save S2R time if remove them.

BRANCH=none
BUG=chrome-os-partner:58870,chrome-os-partner:55934
TEST=build kevin, two dogfooders with suspend_stress_test
passing 3000 cycles and still going on.

Change-Id: Icfbabc0b3ea8d2b5108d4f3de99a803b6d459669
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

The CA53 and CM0 WDT clock gating in rk3399 SGRF, and ATF is in charge of
it because the kernel can't touch SGRF.

Basically the WDT didn't stop at suspend time, it just switched from the
24M to the 32k clock. That meant that the WDT would fire if you slept for
long enough. In other word, the watchdog timer over count will increase to
750 (24*1000/32) times.
The RK3399 HW watchdog interval is 21 seconds. When machine enters the
suspend, the watchdog will reset the system after 35.7 (750/21) hours.

BUG=chrome-os-partner:59257
TEST=daisydog checked and set value, powerd_dbus_suspend to verify.

Change-Id: I88bb2a05b7d67d5ffd292f9d05d033ae9a6a3593
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

This patch adds dependency rule generation and inclusion to the M0
Makefile, so that M0 objects will get correctly remade with an
incremental build if a header file they included changed.

Change-Id: I2067bd9fd4d9dad3e77a09cbf09c7b4db3c1eda5
Signed-off-by: Julius Werner <jwerner@chromium.org>

The dependencies in the M0 Makefile are not correctly laid out, which
may lead to errors with make -j if the binary target gets evaluated
before the target that creates the directory. In addition, the M0
Makefile just calls mkdir without using the platform-independent macros
from the main ARM TF build system. This patch fixes those issues,
removes some unused (and broken) M0 build targets and merges the two M0
output directories into one (since there's no real point splitting it up
and it creates more hassle).

Change-Id: Ia5002479cf9c57fea7aefa8ca88e373df3a51f61
Signed-off-by: Julius Werner <jwerner@chromium.org>

The RK3399 supports close the center logic enter power mode,
so we can close PD_CENTER to save more power during suspend.
Therefore, we need to support save/restore the DDR PHY and
controller registers during suspend/resume.

Also, need CL (http://crosreview.com/397399

) to check disabling
center logic.

Change-Id: I288defd8e9caa3846d9fa663a33e4d51df1aaa5d
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

This patch intend to support save the registers of the DDR controller
and PHY before suspend, and restore them after resume.

Change-Id: Ia10b476c0b837628ac0f365416a7118292753e96
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

This changes the style of dmc register accesses to be a read/write on
a base address plus a register offset instead of reinterpretting a
base address as a struct and accessing members within that struct.

Change-Id: Iead097cd6afdb830d8bc193608cd39d01ce5a6bc
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

This renames dram.c and dram.h to dfs.c and dfs.h respectively. This
is to make room for common functionality between frequency scaling and
suspend code for the DRAM in a pair of common files named dram.c and
dram.h. It also removes a duplicate enum definition from
dram_spec_timing.h

Change-Id: Ibfa1041f8781401f9d27901fe8c61862bcb05562
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

This moves the PMU register definitions into another file for use in
later patches.

Change-Id: I8b5f1e7938b63ada6a743cf9661c3e474e96e4e4
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

Due to the PMU design, the PMU may not clear the WAKEUP bit after
wakeup, therefore, the state machine at the power mode may enter
the infinite loop during WFI.

There is a solution that we can use the M0 to monitor the WAKEUP
bit and clear it during power mode, then the state machine will be
recovered immediately. Then, the DUT can exit the WFI normally.

Change-Id: I303628553b728c214bf2d436bd3122032b5e669c
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

This CL supports add M0 source code to built into the bl31.bin, the
goal is that we can load the M0 code binary into SRAM and execute it.

We need the M0 help us to clean the power_mode_en bit during the AP
PMU enter the state machine with interrupt, and avoid to the AP can
not exit the loop forever.

Change-Id: I844582c54a1f0d44ca41290d44618df58679f341
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

Add the common extra.ld.S and customized rk3399.ld.S to extend
to more features for different platforms.
For example, we can add SRAM section and specific address to
load there if we need it, and the common bl31.ld.S not need to
be modified.

Therefore, we can remove the unused codes which copying explicitly
from the function pmusram_prepare(). It looks like more clear.

Change-Id: Ibffa2da5e8e3d1d2fca80085ebb296ceb967fce8
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

The CRU_CLKSEL_COUNT value is 108, not 0x108.
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Change-Id: Ib9db066b8b3ecafcee7f645dd5633b55a808e3d7

As the new RK3399TRM v1.1, there are some wrong set for CRU_CLKSEL_CON
register.

As the CRU_CLKSEL_CON96～107 high 16-bit isn't write mask and the
CRU_CLKSEL_CON offset is 0x100,not 0x80.

Change-Id: Ie127e9de74b87100af9a0150aad43e89e4972529

We make sure the resuming of gic need to be enabled.
Otherwise, The resume will hit the below panic.
...
[   24.230541] CPU0: update max cpu_capacity 451
[   24.236029] CPU5: update max cpu_capacity 1024
[   24.236046] CPU4: shutdown
[   24.243205] psci: CPU4 killed.
[   24.258730] CPU5: shutdown
[   24.261472] psci: CPU5 killed.
[   24.270417] GIC: unable to set SRE (disabled at EL2), panic ahead
[   24.270417] cat[7801]: undefined instruction: pc=ffffffc0004e65d0
[   24.270417] Code: b0003940 91274400 97f871af d2801e00 (d5184600)
[   24.270417] Internal error: Oops - undefined instruction: 0 [#1] PREEMPT

Change-Id: Ie9542c8d5768ba0accfa073453da8bfe06d4f921

As the checkpatch reports the warning or error.

plat/rockchip/common/plat_pm.c:96:
ERROR: do not set execute permissions for source files
plat/rockchip/rk3399/drivers/pmu/pmu.c:294:
ERROR: do not set execute permissions for source files

plat/rockchip/common/plat_pm.c:286: WARNING: line over 80 characters
plat/rockchip/common/plat_pm.c:287: WARNING: line over 80 characters

Change-Id: Ib347da21c56551c31df3f90f03777b13c75d5c26

for compatible 32bit and 64bit, we use 0x82xxxxxx as function ID,
we modify SIP call function return value to 32 bit.

Change-Id: Ib99b03a9ea423853aaa296dcc634ee82c622a552

For save power cosumption, if gpio power supply shut down, we need to
set gpio2 ~ gpio4 to input and HiZ status when suspend, and recovery
they status when rusume. we do it base on apio pass from loader.

Change-Id: I59fd2395e5e37e63425472a39f519822c9197e4c

some specific board need to disable/enable specific gpio when
suspend/resume, so we add this function, bootloader can pass the
specific gpio, and we can handle these gpios in bl31 suspend/resuem
function.

Change-Id: I373b03ef9202ee4a05a2b9caacdfa01b47ee2177

We may need gpio pull mode later, so add this function.
Besides fix a set pull mode bug, and save gpio clock gate,
when operate the gpio, we will enable gpio clock, when
finish gpio operate, restore gpio clock gate status.

Change-Id: Ia1d602804f571a17f5ddc499908663b968b02974

As rk3399 reported the d8/octane scores drop 10% with cpu idle.
The root cause is thc cpu cluster enter the slow mode.
We don't need switch the clock to 24MHz if cpu cluster enter the
retention mode. In order to improve performance, it just needs for
cluster enter powering off mode.

Also, we shouldn't do anything for hlvl if the system is off.

Change-Id: I2a02962a01343abd0cba47ed63192c1cdf88b119

For the PMU design, we don't expect to get the interrupts before enter
the power mode. Since that will cause the confusion for the state
machine in the power mode.

Change-Id: Id8dee79ae617a66271b5caf92caf35f520f45099

Change-Id: I986d64df9dc62354d50ccea0468b90f090a44160
Signed-off-by: Caesar Wang <wxt@rock-chips.com>