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Commit c95e2e7e authored by Kevin Hilman's avatar Kevin Hilman
Browse files

Merge tag 'renesas-fixes-for-v4.6' of... 

Merge tag 'renesas-fixes-for-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

Merge "Renesas ARM Based SoC Fixes for v4.6" from Simon Horman:

Renesas ARM Based SoC Fixes for v4.6

* Correct preset_lpj calculation which may lead to too short delays
* Correct handling of optional clocks on r8a7791 to restore
  access to the serial port the porter board

* tag 'renesas-fixes-for-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: timer: Fix preset_lpj leading to too short delays
  Revert "ARM: dts: porter: Enable SCIF_CLK frequency and pins"
  ARM: dts: r8a7791: Don't disable referenced optional clocks
parents c0e30913 c531fb27

arch/arm/boot/dts/r8a7791-koelsch.dts

+1 −0
Original line number Diff line number Diff line
@@ -661,6 +661,7 @@ 
};



&pcie_bus_clk {

	clock-frequency = <100000000>;

	status = "okay";

};

arch/arm/boot/dts/r8a7791-porter.dts

+1 −13
Original line number Diff line number Diff line
@@ -143,19 +143,11 @@ 
};



&pfc {

	pinctrl-0 = <&scif_clk_pins>;

	pinctrl-names = "default";



	scif0_pins: serial0 {

		renesas,groups = "scif0_data_d";

		renesas,function = "scif0";

	};



	scif_clk_pins: scif_clk {

		renesas,groups = "scif_clk";

		renesas,function = "scif_clk";

	};



	ether_pins: ether {

		renesas,groups = "eth_link", "eth_mdio", "eth_rmii";

		renesas,function = "eth";
@@ -229,11 +221,6 @@ 
	status = "okay";

};



&scif_clk {

	clock-frequency = <14745600>;

	status = "okay";

};



&ether {

	pinctrl-0 = <&ether_pins &phy1_pins>;

	pinctrl-names = "default";
@@ -414,6 +401,7 @@ 
};



&pcie_bus_clk {

	clock-frequency = <100000000>;

	status = "okay";

};

arch/arm/boot/dts/r8a7791.dtsi

+1 −4
Original line number Diff line number Diff line
@@ -1083,9 +1083,8 @@ 
		pcie_bus_clk: pcie_bus_clk {

			compatible = "fixed-clock";

			#clock-cells = <0>;

			clock-frequency = <100000000>;

			clock-frequency = <0>;

			clock-output-names = "pcie_bus";

			status = "disabled";

		};



		/* External SCIF clock */
@@ -1094,7 +1093,6 @@ 
			#clock-cells = <0>;

			/* This value must be overridden by the board. */

			clock-frequency = <0>;

			status = "disabled";

		};



		/* External USB clock - can be overridden by the board */
@@ -1112,7 +1110,6 @@ 
			/* This value must be overridden by the board. */

			clock-frequency = <0>;

			clock-output-names = "can_clk";

			status = "disabled";

		};



		/* Special CPG clocks */

arch/arm/mach-shmobile/timer.c

+11 −17
Original line number Diff line number Diff line
@@ -40,8 +40,7 @@ static void __init shmobile_setup_delay_hz(unsigned int max_cpu_core_hz, 
void __init shmobile_init_delay(void)

{

	struct device_node *np, *cpus;

	bool is_a7_a8_a9 = false;

	bool is_a15 = false;

	unsigned int div = 0;

	bool has_arch_timer = false;

	u32 max_freq = 0;
@@ -55,27 +54,22 @@ void __init shmobile_init_delay(void) 
		if (!of_property_read_u32(np, "clock-frequency", &freq))

			max_freq = max(max_freq, freq);



		if (of_device_is_compatible(np, "arm,cortex-a8") ||

		    of_device_is_compatible(np, "arm,cortex-a9")) {

			is_a7_a8_a9 = true;

		} else if (of_device_is_compatible(np, "arm,cortex-a7")) {

			is_a7_a8_a9 = true;

			has_arch_timer = true;

		} else if (of_device_is_compatible(np, "arm,cortex-a15")) {

			is_a15 = true;

		if (of_device_is_compatible(np, "arm,cortex-a8")) {

			div = 2;

		} else if (of_device_is_compatible(np, "arm,cortex-a9")) {

			div = 1;

		} else if (of_device_is_compatible(np, "arm,cortex-a7") ||

			 of_device_is_compatible(np, "arm,cortex-a15")) {

			div = 1;

			has_arch_timer = true;

		}

	}



	of_node_put(cpus);



	if (!max_freq)

	if (!max_freq || !div)

		return;



	if (!has_arch_timer || !IS_ENABLED(CONFIG_ARM_ARCH_TIMER)) {

		if (is_a7_a8_a9)

			shmobile_setup_delay_hz(max_freq, 1, 3);

		else if (is_a15)

			shmobile_setup_delay_hz(max_freq, 2, 4);

	}

	if (!has_arch_timer || !IS_ENABLED(CONFIG_ARM_ARCH_TIMER))

		shmobile_setup_delay_hz(max_freq, 1, div);

}