Hi Paul,
On 2016年07月23日 04:24, Paul Gortmaker wrote:
On Fri, Jul 22, 2016 at 5:07 AM, Lin Huang <h...@rock-chips.com> wrote:
base on dfi result, we do ddr frequency scaling, register
dmc driver to devfreq framework, and use simple-ondemand
policy.
Signed-off-by: Lin Huang <h...@rock-chips.com>
---
Changes in v3:
- operate dram setting through sip call
- imporve set rate flow
Changes in v2:
- None
Changes in v1:
- move dfi controller to event
- fix set voltage sequence when set rate fail
- change Kconfig type from tristate to bool
- move unuse EXPORT_SYMBOL_GPL()
drivers/devfreq/Kconfig | 1 +
drivers/devfreq/Makefile | 1 +
drivers/devfreq/rockchip/Kconfig | 15 +
drivers/devfreq/rockchip/Makefile | 2 +
drivers/devfreq/rockchip/rk3399_dmc.c | 482 ++++++++++++++++++++++++++++++++
drivers/devfreq/rockchip/rockchip_dmc.c | 143 ++++++++++
include/soc/rockchip/rockchip_dmc.h | 45 +++
7 files changed, 689 insertions(+)
create mode 100644 drivers/devfreq/rockchip/Kconfig
create mode 100644 drivers/devfreq/rockchip/Makefile
create mode 100644 drivers/devfreq/rockchip/rk3399_dmc.c
create mode 100644 drivers/devfreq/rockchip/rockchip_dmc.c
create mode 100644 include/soc/rockchip/rockchip_dmc.h
diff --git a/drivers/devfreq/Kconfig b/drivers/devfreq/Kconfig
index a5be56e..cb67246 100644
--- a/drivers/devfreq/Kconfig
+++ b/drivers/devfreq/Kconfig
@@ -101,5 +101,6 @@ config ARM_TEGRA_DEVFREQ
operating frequencies and voltages with OPP support.
source "drivers/devfreq/event/Kconfig"
+source "drivers/devfreq/rockchip/Kconfig"
endif # PM_DEVFREQ
diff --git a/drivers/devfreq/Makefile b/drivers/devfreq/Makefile
index 09f11d9..48e2ae6 100644
--- a/drivers/devfreq/Makefile
+++ b/drivers/devfreq/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_DEVFREQ_GOV_PASSIVE) += governor_passive.o
# DEVFREQ Drivers
obj-$(CONFIG_ARM_EXYNOS_BUS_DEVFREQ) += exynos-bus.o
obj-$(CONFIG_ARM_TEGRA_DEVFREQ) += tegra-devfreq.o
+obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip/
# DEVFREQ Event Drivers
obj-$(CONFIG_PM_DEVFREQ_EVENT) += event/
diff --git a/drivers/devfreq/rockchip/Kconfig b/drivers/devfreq/rockchip/Kconfig
new file mode 100644
index 0000000..7fb1cff
--- /dev/null
+++ b/drivers/devfreq/rockchip/Kconfig
@@ -0,0 +1,15 @@
+config ARM_ROCKCHIP_DMC_DEVFREQ
+ bool "ARM ROCKCHIP DMC DEVFREQ Driver"
+ depends on ARCH_ROCKCHIP
+ help
+ This adds the DEVFREQ driver framework for the rockchip dmc.
+
+config ARM_RK3399_DMC_DEVFREQ
+ bool "ARM RK3399 DMC DEVFREQ Driver"
Since you are using bool Kconfigs for your driver, please do not use
module.h or MODULE_<xyz> tags in your driver, and use the builtin
register function.
Alternatively if there really is a use case for it to be a modular driver
then use a tristate Kconfig.
Thanks for pointing it, will fix it next version.
THanks,
Paul.
--
+ depends on ARM_ROCKCHIP_DMC_DEVFREQ
+ select PM_OPP
+ select DEVFREQ_GOV_SIMPLE_ONDEMAND
+ help
+ This adds the DEVFREQ driver for the RK3399 dmc. It sets the
frequency
+ for the memory controller and reads the usage counts from hardware.
+
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--
Lin Huang
