[RFC 5/9] ARM: dts: AM4372: Add opp-modifier device entry and add higher OPPs

Dave Gerlach
2014-03-14T19:25:31Z

Add an entry for opp_modifier which configures OPPs on AM4372. Within
this, nodes are defined with the opp-modifier propety that are defined as
a list of frequency, offset from base register, and efuse value.
The CPU node passes a phandle to the appropriate child node to get the
correct table.

This patch also adds higher eFused OPPs for AM4372.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
---
arch/arm/boot/dts/am4372.dtsi | 30 ++++++++++++++++++++++++++++++
include/dt-bindings/opp/ti.h | 6 ++++++
2 files changed, 36 insertions(+)

diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index c6bd4d9..dbaa2e3 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -9,6 +9,7 @@
*/

#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/opp/ti.h>

#include "skeleton.dtsi"

@@ -33,6 +34,17 @@
compatible = "arm,cortex-a9";
device_type = "cpu";
reg = <0>;
+
+ operating-points = <
+ /* kHz uV */
+ 300000 950000
+ 600000 1100000
+ 720000 1200000
+ 800000 1260000
+ 1000000 1325000
+ >;
+
+ platform-opp-modifier = <&mpu_opp_modifier>;
};
};

@@ -662,6 +674,24 @@
dma-names = "tx", "rx";
};

+ opp_modifier: opp_modifier@0x44e10610 {
+ compatible = "opp-modifier-reg-bit";
+ reg = <0x44e10610 0x04>;
+
+ opp,reg-bit-enable-low;
+
+ mpu_opp_modifier: mpu_opp_modifier {
+ opp-modifier = <
+ /* kHz offset value */
+ 1000000 0 AM43XX_EFUSE_SMA_OPP_NITRO_1GHZ_BIT
+ 800000 0 AM43XX_EFUSE_SMA_OPP_TURBO_800MHZ_BIT
+ 720000 0 AM43XX_EFUSE_SMA_OPP_120_720MHZ_BIT
+ 600000 0 AM43XX_EFUSE_SMA_OPP_100_600MHZ_BIT
+ 300000 0 AM43XX_EFUSE_SMA_OPP_50_300MHZ_BIT
+ >;
+ };
+ };
+
mcasp0: mcasp@48038000 {
compatible = "ti,am33xx-mcasp-audio";
ti,hwmods = "mcasp0";
diff --git a/include/dt-bindings/opp/ti.h b/include/dt-bindings/opp/ti.h
index 58436c1..d3717be 100644
--- a/include/dt-bindings/opp/ti.h
+++ b/include/dt-bindings/opp/ti.h
@@ -19,4 +19,10 @@
#define AM33XX_EFUSE_SMA_OPP_TURBO_800MHZ_BIT (1 << 8)
#define AM33XX_EFUSE_SMA_OPP_NITRO_1GHZ_BIT (1 << 9)

+#define AM43XX_EFUSE_SMA_OPP_50_300MHZ_BIT (1 << 0)
+#define AM43XX_EFUSE_SMA_OPP_100_600MHZ_BIT (1 << 2)
+#define AM43XX_EFUSE_SMA_OPP_120_720MHZ_BIT (1 << 3)
+#define AM43XX_EFUSE_SMA_OPP_TURBO_800MHZ_BIT (1 << 4)
+#define AM43XX_EFUSE_SMA_OPP_NITRO_1GHZ_BIT (1 << 5)
+
#endif /* __DT_BINDINGS_OPP_TI_H__ */
--
1.9.0