arm64: dts: ti: k3-am625-sk: Add 1.4GHz OPP

The 1.4 GHz OPP requires supported silicon variant (T speed grade) and
also VDD_CORE to be at 0.85V.  All production revisions of the AM625-SK
have both so we can enable the 1.4 GHz OPP for it.  Any other boards
based on this design should verify that they have the right silicon
variant and the right power tree before adding 1.4 GHz support in their
board dts file.

Signed-off-by: Vibhore Vardhan <vibhore@ti.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

diff --git a/arch/arm64/boot/dts/ti/k3-am625-sk.dts b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
index 93a5f0817efc4539825c00152229460c893cee85..4620ef5e19bb53705ce98bc150e09769bb40da5a 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am625-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am625-sk.dts
@@ -31,6 +31,15 @@
                bootargs = "console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000";
        };
 
+       opp-table {
+               /* Add 1.4GHz OPP for am625-sk board. Requires VDD_CORE to be at 0.85V */
+               opp-1400000000 {
+                       opp-hz = /bits/ 64 <1400000000>;
+                       opp-supported-hw = <0x01 0x0004>;
+                       clock-latency-ns = <6000000>;
+               };
+       };
+
        memory@80000000 {
                device_type = "memory";
                /* 2G RAM */