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soc: qcom: smem: Move RPM message ram out of smem DT node

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SMEM is a software construct built on top of a DDR reserved region
and sometimes a device memory region called RPM message ram. Having
the RPM message ram in the smem DT node's reg property leads to the
smem node being located in different places depending on if the
message ram is being used or not. Let's add a qcom specific
property, qcom,rpm-msg-ram, and point to the device memory from
the SMEM node via a phandle.  As SMEM is a software construct, it
really needs to reside at the root of the DT regardless of whether
it's using the message ram or not.

Cc: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <agross@codeaurora.org>
This commit is contained in:
Stephen Boyd
2015-10-08 13:34:09 -05:00
committed by Andy Gross
parent a8ddd1b998
commit d0bfd7c9b1
2 changed files with 41 additions and 49 deletions
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17
arch/arm/boot/dts/qcom-msm8974.dtsi
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@@ -100,6 +100,15 @@
clock-frequency = <19200000>;
};
smem {
compatible = "qcom,smem";
memory-region = <&smem_region>;
qcom,rpm-msg-ram = <&rpm_msg_ram>;
hwlocks = <&tcsr_mutex 3>;
};
soc: soc {
#address-cells = <1>;
#size-cells = <1>;
@@ -250,13 +259,9 @@
#hwlock-cells = <1>;
};
smem@fa00000 {
compatible = "qcom,smem";
memory-region = <&smem_region>;
rpm_msg_ram: memory@fc428000 {
compatible = "qcom,rpm-msg-ram";
reg = <0xfc428000 0x4000>;
hwlocks = <&tcsr_mutex 3>;
};
blsp1_uart2: serial@f991e000 {