Add an entry for opp_modifier which configures OPPs on imx6q. Within this nodes are defined with opp-modifier propety that are defined as a list of frequency, offset from base register, and efuse value. This is an untested example patch to show how opp-modifier could be used for this platform. Signed-off-by: Dave Gerlach <d-gerlach@xxxxxx> --- arch/arm/boot/dts/imx6q.dtsi | 18 ++++++++++++++++++ include/dt-bindings/opp/imx.h | 17 +++++++++++++++++ 2 files changed, 35 insertions(+) create mode 100644 include/dt-bindings/opp/imx.h diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi index f024ef2..4cc48ef 100644 --- a/arch/arm/boot/dts/imx6q.dtsi +++ b/arch/arm/boot/dts/imx6q.dtsi @@ -10,6 +10,7 @@ #include "imx6q-pinfunc.h" #include "imx6qdl.dtsi" +#include <dt-bindings/opp/imx.h> / { cpus { @@ -36,6 +37,8 @@ arm-supply = <®_arm>; pu-supply = <®_pu>; soc-supply = <®_soc>; + + platform-opp-modifier = <&mpu_opp_modifier>; }; cpu@1 { @@ -140,6 +143,21 @@ clock-names = "bus", "di0", "di1"; resets = <&src 4>; }; + + opp_modifier: opp_modifier@0x021bc440 { + compatible = "opp-modifier-reg-val"; + reg = <0x021bc440 0x04>; + opp,reg-mask = <0x00030000>; + + mpu_opp_modifier: mpu_opp_modifier { + opp-modifier = < + /* kHz offset value */ + 1200000 0 OPP_OCOTP_CFG3_SPEED_1P2GHZ + 996000 0 OPP_OCOTP_CFG3_SPEED_996MHZ + >; + }; + }; + }; }; diff --git a/include/dt-bindings/opp/imx.h b/include/dt-bindings/opp/imx.h new file mode 100644 index 0000000..2700ab9 --- /dev/null +++ b/include/dt-bindings/opp/imx.h @@ -0,0 +1,17 @@ +/* + * This header provides constants for iMX SoC OPP bindings. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#ifndef __DT_BINDINGS_OPP_IMX_H__ +#define __DT_BINDINGS_OPP_IMX_H__ + +#define OPP_OCOTP_CFG3_SPEED_1P2GHZ (0x3 << 16) +#define OPP_OCOTP_CFG3_SPEED_996MHZ (0x2 << 16) +#define OPP_OCOTP_CFG3_SPEED_852MHZ (0x1 << 16) + +#endif /* __DT_BINDINGS_OPP_IMX_H__ */ -- 1.9.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html