rockchip: rk3399: Move DQS drive strength setting to M0

This moves the setting of the DQS drive strength to the M0 to minimize
the impact on DDR transactions. We need to have the DQS drive strength

rockchip: rk3399: Move DQS drive strength setting to M0

This moves the setting of the DQS drive strength to the M0 to minimize
the impact on DDR transactions. We need to have the DQS drive strength
changed for data training, which is triggered by the M0, but it also
needs to be changed back when data training is finished.

Signed-off-by: Derek Basehore <dbasehore@chromium.org>

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rockchip: rk3399: Remove dram dfs optimization

This removes an optimization to not recalculate parameters if the
frequency index being switched to hold the next frequency. This is
because some regis

rockchip: rk3399: Remove dram dfs optimization

This removes an optimization to not recalculate parameters if the
frequency index being switched to hold the next frequency. This is
because some registers do not have a copy per frequency index, so this
optimization might be causing problems.

Signed-off-by: Derek Basehore <dbasehore@chromium.org>

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rockchip: rk3399: improve the m0 enable flow

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 f

rockchip: rk3399: improve the m0 enable flow

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>

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rockchip: rk3399: dram: set all ddr frequency pll_postdiv values to 0

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>
Sig

rockchip: rk3399: dram: set all ddr frequency pll_postdiv values to 0

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>

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rockchip: rk3399: enable CA training when do ddr dfs

For ddr dfs stable, We need to enable ddr CA training
when do ddr dfs.

Signed-off-by: Lin Huang <hl@rock-chips.com>

rockchip: rk3399: Enable per CS training at 666MHz

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

rockchip: rk3399: Enable per CS training at 666MHz

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>

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rockchip: rk3399: add support for ddrfreq suspend/resume

This patch sets the frequency configuration of the next DRAM DFS index
to the configuration of the current index. This does not perform a
fre

rockchip: rk3399: add support for ddrfreq suspend/resume

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>

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rk3399: dram: use PMU M0 to do ddr frequency scaling

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 als

rk3399: dram: use PMU M0 to do ddr frequency scaling

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>

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rk3399: dram: making phy into dll bypass mode at low frequency

when dram frequency below 260MHz, phy master dll may unlock, so
let phy master dll working at dll bypass mode when frequency is
below 2

rk3399: dram: making phy into dll bypass mode at low frequency

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>

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rockchip: rk3399: dram: remove dram_init and dts_timing_receive function

we can reuse the dram config from loader, so we can remove dram_init()
and dts_timing_receive() funciton in dram.c, add the d

rockchip: rk3399: dram: remove dram_init and dts_timing_receive function

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>

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Merge pull request #745 from rockchip-linux/support-rk3399-dram

Support rk3399 dram

rockchip: Change dmc register accesses to ATF style for rk3399

This changes the style of dmc register accesses to be a read/write on
a base address plus a register offset instead of reinterpretting

rockchip: Change dmc register accesses to ATF style for rk3399

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>

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rockchip: Break out common dram code for rk3399

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 co

rockchip: Break out common dram code for rk3399

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>

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