clk: mvebu: armada 370/XP add clock gating control provider for DT (c4c34d60) · Commits · e / devices / android_kernel_fairphone_FP3

Documentation/devicetree/bindings/clock/mvebu-gated-clock.txt

+43 −0

Original line number	Diff line number	Diff line
		@@ -6,6 +6,49 @@ the clock ID in its "clocks" phandle cell. The clock ID is directly mapped to
		the corresponding clock gating control bit in HW to ease manual clock lookup
		in datasheet.

		The following is a list of provided IDs for Armada 370:
		ID Clock Peripheral
		-----------------------------------
		0 Audio AC97 Cntrl
		1 pex0_en PCIe 0 Clock out
		2 pex1_en PCIe 1 Clock out
		3 ge1 Gigabit Ethernet 1
		4 ge0 Gigabit Ethernet 0
		5 pex0 PCIe Cntrl 0
		9 pex1 PCIe Cntrl 1
		15 sata0 SATA Host 0
		17 sdio SDHCI Host
		25 tdm Time Division Mplx
		28 ddr DDR Cntrl
		30 sata1 SATA Host 0

		The following is a list of provided IDs for Armada XP:
		ID Clock Peripheral
		-----------------------------------
		0 audio Audio Cntrl
		1 ge3 Gigabit Ethernet 3
		2 ge2 Gigabit Ethernet 2
		3 ge1 Gigabit Ethernet 1
		4 ge0 Gigabit Ethernet 0
		5 pex0 PCIe Cntrl 0
		6 pex1 PCIe Cntrl 1
		7 pex2 PCIe Cntrl 2
		8 pex3 PCIe Cntrl 3
		13 bp
		14 sata0lnk
		15 sata0 SATA Host 0
		16 lcd LCD Cntrl
		17 sdio SDHCI Host
		18 usb0 USB Host 0
		19 usb1 USB Host 1
		20 usb2 USB Host 2
		22 xor0 XOR DMA 0
		23 crypto CESA engine
		25 tdm Time Division Mplx
		28 xor1 XOR DMA 1
		29 sata1lnk
		30 sata1 SATA Host 0

		The following is a list of provided IDs for Dove:
		ID Clock Peripheral
		-----------------------------------

drivers/clk/mvebu/clk-gating-ctrl.c

+73 −1

Original line number	Diff line number	Diff line
		@@ -88,10 +88,21 @@ static void __init mvebu_clk_gating_setup(
		}

		for (n = 0; n < ctrl->num_gates; n++) {
		u8 flags = 0;
		const char *parent =
		(descr[n].parent) ? descr[n].parent : default_parent;

		/*
		* On Armada 370, the DDR clock is a special case: it
		* isn't taken by any driver, but should anyway be
		* kept enabled, so we mark it as IGNORE_UNUSED for
		* now.
		*/
		if (!strcmp(descr[n].name, "ddr"))
		flags \|= CLK_IGNORE_UNUSED;

		ctrl->gates[n] = clk_register_gate(NULL, descr[n].name, parent,
		0, base, descr[n].bit_idx, 0, &ctrl->lock);
		flags, base, descr[n].bit_idx, 0, &ctrl->lock);
		WARN_ON(IS_ERR(ctrl->gates[n]));
		}
		of_clk_add_provider(np, mvebu_clk_gating_get_src, ctrl);
		@@ -101,6 +112,53 @@ static void __init mvebu_clk_gating_setup(
		* SoC specific clock gating control
		*/

		#ifdef CONFIG_MACH_ARMADA_370
		static const struct mvebu_soc_descr __initconst armada_370_gating_descr[] = {
		{ "audio", NULL, 0 },
		{ "pex0_en", NULL, 1 },
		{ "pex1_en", NULL, 2 },
		{ "ge1", NULL, 3 },
		{ "ge0", NULL, 4 },
		{ "pex0", NULL, 5 },
		{ "pex1", NULL, 9 },
		{ "sata0", NULL, 15 },
		{ "sdio", NULL, 17 },
		{ "tdm", NULL, 25 },
		{ "ddr", NULL, 28 },
		{ "sata1", NULL, 30 },
		{ }
		};
		#endif

		#ifdef CONFIG_MACH_ARMADA_XP
		static const struct mvebu_soc_descr __initconst armada_xp_gating_descr[] = {
		{ "audio", NULL, 0 },
		{ "ge3", NULL, 1 },
		{ "ge2", NULL, 2 },
		{ "ge1", NULL, 3 },
		{ "ge0", NULL, 4 },
		{ "pex0", NULL, 5 },
		{ "pex1", NULL, 6 },
		{ "pex2", NULL, 7 },
		{ "pex3", NULL, 8 },
		{ "bp", NULL, 13 },
		{ "sata0lnk", NULL, 14 },
		{ "sata0", "sata0lnk", 15 },
		{ "lcd", NULL, 16 },
		{ "sdio", NULL, 17 },
		{ "usb0", NULL, 18 },
		{ "usb1", NULL, 19 },
		{ "usb2", NULL, 20 },
		{ "xor0", NULL, 22 },
		{ "crypto", NULL, 23 },
		{ "tdm", NULL, 25 },
		{ "xor1", NULL, 28 },
		{ "sata1lnk", NULL, 29 },
		{ "sata1", "sata1lnk", 30 },
		{ }
		};
		#endif

		#ifdef CONFIG_ARCH_DOVE
		static const struct mvebu_soc_descr __initconst dove_gating_descr[] = {
		{ "usb0", NULL, 0 },
		@@ -147,6 +205,20 @@ static const struct mvebu_soc_descr __initconst kirkwood_gating_descr[] = {
		#endif

		static const __initdata struct of_device_id clk_gating_match[] = {
		#ifdef CONFIG_MACH_ARMADA_370
		{
		.compatible = "marvell,armada-370-gating-clock",
		.data = armada_370_gating_descr,
		},
		#endif

		#ifdef CONFIG_MACH_ARMADA_XP
		{
		.compatible = "marvell,armada-xp-gating-clock",
		.data = armada_xp_gating_descr,
		},
		#endif

		#ifdef CONFIG_ARCH_DOVE
		{
		.compatible = "marvell,dove-gating-clock",