cpm_uart_core has a dependency on fsl,cpm-brg/clock-frequency, this
means that a .dts that uses the cpm uart driver needs to supply a
clock-frequency entry for get_brgfreq to return a meaningful number.
Included is a patchset which adds the correct brgclk to the adder port -
@ 50Mhz and also adds an entry for mpc885ads - which I've noticed is
missing a clock-frequency entry.
Without an entry for clock-frequency in the .dts you'd get -1 as the
return value brgclk !
Signed-off-by: Bryan O'Donoghue <[EMAIL PROTECTED]>
---
diff --git a/arch/powerpc/boot/dts/adder875-redboot.dts
b/arch/powerpc/boot/dts/adder875-redboot.dts
index 7c25d96..975f3d4 100644
--- a/arch/powerpc/boot/dts/adder875-redboot.dts
+++ b/arch/powerpc/boot/dts/adder875-redboot.dts
@@ -149,6 +149,7 @@
compatible = "fsl,mpc875-brg",
"fsl,cpm1-brg",
"fsl,cpm-brg";
+ clock-frequency = <0x2faf080>;
reg = <0x9f0 0x10>;
};
diff --git a/arch/powerpc/boot/dts/adder875-uboot.dts
b/arch/powerpc/boot/dts/adder875-uboot.dts
index 605202f..18d6dd6 100644
--- a/arch/powerpc/boot/dts/adder875-uboot.dts
+++ b/arch/powerpc/boot/dts/adder875-uboot.dts
@@ -148,6 +148,7 @@
compatible = "fsl,mpc875-brg",
"fsl,cpm1-brg",
"fsl,cpm-brg";
+ clock-frequency = <0x2faf080>;
reg = <0x9f0 0x10>;
};
diff --git a/arch/powerpc/boot/dts/mpc885ads.dts
b/arch/powerpc/boot/dts/mpc885ads.dts
index 8848e63..f2a437b 100644
--- a/arch/powerpc/boot/dts/mpc885ads.dts
+++ b/arch/powerpc/boot/dts/mpc885ads.dts
@@ -166,6 +166,7 @@
compatible = "fsl,mpc885-brg",
"fsl,cpm1-brg",
"fsl,cpm-brg";
+ clock-frequency = <0>;
reg = <9f0 10>;
};
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