Messages in this thread Patch in this message | | | From | Lukasz Luba <> | Subject | [PATCH 2/3] ARM: dts: exynos: map 0x10000 SFR instead of 0x100 in DMC Exynos5422 | Date | Wed, 25 Sep 2019 18:18:12 +0200 |
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There is a need to access registers at address offset near 0x10000. These registers are private DMC performance counters, which might be used as interrupt trigger when overflow. Potential usage is to skip polling in devfreq framework and switch to interrupt managed bandwidth control.
Signed-off-by: Lukasz Luba <l.luba@partner.samsung.com> --- arch/arm/boot/dts/exynos5420.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi index 72738e620d11..b695f07f7eed 100644 --- a/arch/arm/boot/dts/exynos5420.dtsi +++ b/arch/arm/boot/dts/exynos5420.dtsi @@ -239,7 +239,7 @@ dmc: memory-controller@10c20000 { compatible = "samsung,exynos5422-dmc"; - reg = <0x10c20000 0x100>, <0x10c30000 0x100>; + reg = <0x10c20000 0x10000>, <0x10c30000 0x10000>; interrupt-parent = <&combiner>; interrupts = <16 0>; clocks = <&clock CLK_FOUT_SPLL>, -- 2.17.1
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