diff options
| author | Enric Balletbo i Serra <enric.balletbo@collabora.com> | 2018-05-09 14:57:44 +0200 |
|---|---|---|
| committer | MyungJoo Ham <myungjoo.ham@samsung.com> | 2018-07-18 13:58:30 +0900 |
| commit | 49502b23e0e45b57b776490cfdfd95ea7fecd7c7 (patch) | |
| tree | 27044eec71fbc4c55ed7f91b2d334f6667ff169d | |
| parent | 2d2894c94a61930615cd1411cd8e0bf5b804e3a1 (diff) | |
dt-bindings: clock: add rk3399 DDR3 standard speed bins.
DDR3 SDRAM Standard (JESD79-3F) defines some standard speed bins for
DDR3 memories. The rk3399_dmc driver allows you to pass these values via
the device tree. For that purpose the devfreq/rk3399_dmc.txt binding
refers to a ddr.h file which does not exist. This patch adds the missing
defines in a include file called rk3399-ddr.h with the definition of
standard speed bins according to the ARM Trusted Firmware (ATF).
Fixes: c1ceb8f7c167 (Documentation: bindings: add dt documentation for rk3399 dmc)
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
| -rw-r--r-- | Documentation/devicetree/bindings/devfreq/rk3399_dmc.txt | 2 | ||||
| -rw-r--r-- | include/dt-bindings/clock/rk3399-ddr.h | 56 |
2 files changed, 57 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/devfreq/rk3399_dmc.txt b/Documentation/devicetree/bindings/devfreq/rk3399_dmc.txt index 1b93b33c7d38..e0030a139383 100644 --- a/Documentation/devicetree/bindings/devfreq/rk3399_dmc.txt +++ b/Documentation/devicetree/bindings/devfreq/rk3399_dmc.txt @@ -19,7 +19,7 @@ Required properties: Following properties relate to DDR timing: -- rockchip,dram_speed_bin : Value reference include/dt-bindings/clock/ddr.h, +- rockchip,dram_speed_bin : Value reference include/dt-bindings/clock/rk3399-ddr.h, it selects the DDR3 cl-trp-trcd type. It must be set according to "Speed Bin" in DDR3 datasheet, DO NOT use a smaller "Speed Bin" than specified diff --git a/include/dt-bindings/clock/rk3399-ddr.h b/include/dt-bindings/clock/rk3399-ddr.h new file mode 100644 index 000000000000..ed2280844963 --- /dev/null +++ b/include/dt-bindings/clock/rk3399-ddr.h @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */ + +#ifndef DT_BINDINGS_DDR_H +#define DT_BINDINGS_DDR_H + +/* + * DDR3 SDRAM Standard Speed Bins include tCK, tRCD, tRP, tRAS and tRC for + * each corresponding bin. + */ + +/* DDR3-800 (5-5-5) */ +#define DDR3_800D 0 +/* DDR3-800 (6-6-6) */ +#define DDR3_800E 1 +/* DDR3-1066 (6-6-6) */ +#define DDR3_1066E 2 +/* DDR3-1066 (7-7-7) */ +#define DDR3_1066F 3 +/* DDR3-1066 (8-8-8) */ +#define DDR3_1066G 4 +/* DDR3-1333 (7-7-7) */ +#define DDR3_1333F 5 +/* DDR3-1333 (8-8-8) */ +#define DDR3_1333G 6 +/* DDR3-1333 (9-9-9) */ +#define DDR3_1333H 7 +/* DDR3-1333 (10-10-10) */ +#define DDR3_1333J 8 +/* DDR3-1600 (8-8-8) */ +#define DDR3_1600G 9 +/* DDR3-1600 (9-9-9) */ +#define DDR3_1600H 10 +/* DDR3-1600 (10-10-10) */ +#define DDR3_1600J 11 +/* DDR3-1600 (11-11-11) */ +#define DDR3_1600K 12 +/* DDR3-1600 (10-10-10) */ +#define DDR3_1866J 13 +/* DDR3-1866 (11-11-11) */ +#define DDR3_1866K 14 +/* DDR3-1866 (12-12-12) */ +#define DDR3_1866L 15 +/* DDR3-1866 (13-13-13) */ +#define DDR3_1866M 16 +/* DDR3-2133 (11-11-11) */ +#define DDR3_2133K 17 +/* DDR3-2133 (12-12-12) */ +#define DDR3_2133L 18 +/* DDR3-2133 (13-13-13) */ +#define DDR3_2133M 19 +/* DDR3-2133 (14-14-14) */ +#define DDR3_2133N 20 +/* DDR3 ATF default */ +#define DDR3_DEFAULT 21 + +#endif |