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* [PATCH v2 1/2] ARC: [plat-axs10x]: use pgu pll instead of fixed clock
@ 2019-11-20 11:29 Eugeniy Paltsev
  2019-11-20 11:29 ` [PATCH v2 2/2] ARC: [plat-axs10x]: remove hardcoded video mode from bootargs Eugeniy Paltsev
  0 siblings, 1 reply; 2+ messages in thread
From: Eugeniy Paltsev @ 2019-11-20 11:29 UTC (permalink / raw)
  To: linux-snps-arc, Vineet Gupta
  Cc: linux-kernel, Alexey Brodkin, Eugeniy Paltsev

Use PLL driver instead of fixed-clock for PGU pixel clock.
That allows us to support wider range of graphic modes.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
Changes v1->v2:
 * add missing input_clk node to AXS101. No changes for AXS103 /
   AXS103 SMP.

 arch/arc/boot/dts/axc001.dtsi    |  6 ++++++
 arch/arc/boot/dts/axs10x_mb.dtsi | 11 ++++++-----
 2 files changed, 12 insertions(+), 5 deletions(-)

diff --git a/arch/arc/boot/dts/axc001.dtsi b/arch/arc/boot/dts/axc001.dtsi
index 6ec1fcdfc0d7..79ec27c043c1 100644
--- a/arch/arc/boot/dts/axc001.dtsi
+++ b/arch/arc/boot/dts/axc001.dtsi
@@ -28,6 +28,12 @@
 			clock-frequency = <750000000>;
 		};
 
+		input_clk: input-clk {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <33333333>;
+		};
+
 		core_intc: arc700-intc@cpu {
 			compatible = "snps,arc700-intc";
 			interrupt-controller;
diff --git a/arch/arc/boot/dts/axs10x_mb.dtsi b/arch/arc/boot/dts/axs10x_mb.dtsi
index 08bcfed6b80f..f9a5c9ddcae7 100644
--- a/arch/arc/boot/dts/axs10x_mb.dtsi
+++ b/arch/arc/boot/dts/axs10x_mb.dtsi
@@ -61,12 +61,13 @@
 				clock-frequency = <25000000>;
 				#clock-cells = <0>;
 			};
+		};
 
-			pguclk: pguclk {
-				#clock-cells = <0>;
-				compatible = "fixed-clock";
-				clock-frequency = <74250000>;
-			};
+		pguclk: pguclk@10080 {
+			compatible = "snps,axs10x-pgu-pll-clock";
+			reg = <0x10080 0x10>, <0x110 0x10>;
+			#clock-cells = <0>;
+			clocks = <&input_clk>;
 		};
 
 		gmac: ethernet@18000 {
-- 
2.21.0


^ permalink raw reply	[flat|nested] 2+ messages in thread

* [PATCH v2 2/2] ARC: [plat-axs10x]: remove hardcoded video mode from bootargs
  2019-11-20 11:29 [PATCH v2 1/2] ARC: [plat-axs10x]: use pgu pll instead of fixed clock Eugeniy Paltsev
@ 2019-11-20 11:29 ` Eugeniy Paltsev
  0 siblings, 0 replies; 2+ messages in thread
From: Eugeniy Paltsev @ 2019-11-20 11:29 UTC (permalink / raw)
  To: linux-snps-arc, Vineet Gupta
  Cc: linux-kernel, Alexey Brodkin, Eugeniy Paltsev

Now have pixel clock PLL driver and we can change pixel clock rate
so we don't need to enforce one exact video mode. Moreover enforcing
video mode is harmful in case of we enforce mode which isn't
supported by the monitor we are using.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
Changes v1->v2:
 * None.

 arch/arc/boot/dts/axs101.dts     | 2 +-
 arch/arc/boot/dts/axs103_idu.dts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arc/boot/dts/axs101.dts b/arch/arc/boot/dts/axs101.dts
index 305a7f9658e0..c4cfc5f4f427 100644
--- a/arch/arc/boot/dts/axs101.dts
+++ b/arch/arc/boot/dts/axs101.dts
@@ -14,6 +14,6 @@
 	compatible = "snps,axs101", "snps,arc-sdp";
 
 	chosen {
-		bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=tty0 console=ttyS3,115200n8 consoleblank=0 video=1280x720@60 print-fatal-signals=1";
+		bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=tty0 console=ttyS3,115200n8 consoleblank=0 print-fatal-signals=1";
 	};
 };
diff --git a/arch/arc/boot/dts/axs103_idu.dts b/arch/arc/boot/dts/axs103_idu.dts
index 46c9136cbf2b..a934b92a8c30 100644
--- a/arch/arc/boot/dts/axs103_idu.dts
+++ b/arch/arc/boot/dts/axs103_idu.dts
@@ -17,6 +17,6 @@
 	compatible = "snps,axs103", "snps,arc-sdp";
 
 	chosen {
-		bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=tty0 console=ttyS3,115200n8 print-fatal-signals=1 consoleblank=0 video=1280x720@60";
+		bootargs = "earlycon=uart8250,mmio32,0xe0022000,115200n8 console=tty0 console=ttyS3,115200n8 print-fatal-signals=1 consoleblank=0";
 	};
 };
-- 
2.21.0


^ permalink raw reply	[flat|nested] 2+ messages in thread

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2019-11-20 11:29 [PATCH v2 1/2] ARC: [plat-axs10x]: use pgu pll instead of fixed clock Eugeniy Paltsev
2019-11-20 11:29 ` [PATCH v2 2/2] ARC: [plat-axs10x]: remove hardcoded video mode from bootargs Eugeniy Paltsev

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