[U-Boot,v6,05/20] clk: sunxi: Add Allwinner A10s/A13 CLK driver

Message ID 20190110184016.17027-6-jagan@amarulasolutions.com
State Accepted
Delegated to: Jagannadha Sutradharudu Teki
Headers show
Series
  • clk: Add Allwinner CLK, RESET support
Related show

Commit Message

Jagan Teki Jan. 10, 2019, 6:40 p.m.
Add initial clock driver for Allwinner A10s/A13.

- Implement USB ahb and USB clocks via ccu_clk_gate table
  for A10s/A13, so it can accessed in common clk enable and
  disable functions from clk_sunxi.c
- Implement USB resets via ccu_reset table for A10s/A13,
  so it can accessed in common reset deassert and assert
  functions from reset-sunxi.c

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
 drivers/clk/sunxi/Kconfig    |  7 +++++
 drivers/clk/sunxi/Makefile   |  1 +
 drivers/clk/sunxi/clk_a10s.c | 56 ++++++++++++++++++++++++++++++++++++
 3 files changed, 64 insertions(+)
 create mode 100644 drivers/clk/sunxi/clk_a10s.c

Patch

diff --git a/drivers/clk/sunxi/Kconfig b/drivers/clk/sunxi/Kconfig
index fbbf94ef55..b228c2fa3a 100644
--- a/drivers/clk/sunxi/Kconfig
+++ b/drivers/clk/sunxi/Kconfig
@@ -16,6 +16,13 @@  config CLK_SUN4I_A10
 	  This enables common clock driver support for platforms based
 	  on Allwinner A10/A20 SoC.
 
+config CLK_SUN5I_A10S
+	bool "Clock driver for Allwinner A10s/A13"
+	default MACH_SUN5I
+	help
+	  This enables common clock driver support for platforms based
+	  on Allwinner A10s/A13 SoC.
+
 config CLK_SUN8I_H3
 	bool "Clock driver for Allwinner H3/H5"
 	default MACH_SUNXI_H3_H5
diff --git a/drivers/clk/sunxi/Makefile b/drivers/clk/sunxi/Makefile
index bba830922f..466d4b79d6 100644
--- a/drivers/clk/sunxi/Makefile
+++ b/drivers/clk/sunxi/Makefile
@@ -7,5 +7,6 @@ 
 obj-$(CONFIG_CLK_SUNXI) += clk_sunxi.o
 
 obj-$(CONFIG_CLK_SUN4I_A10) += clk_a10.o
+obj-$(CONFIG_CLK_SUN5I_A10S) += clk_a10s.o
 obj-$(CONFIG_CLK_SUN8I_H3) += clk_h3.o
 obj-$(CONFIG_CLK_SUN50I_A64) += clk_a64.o
diff --git a/drivers/clk/sunxi/clk_a10s.c b/drivers/clk/sunxi/clk_a10s.c
new file mode 100644
index 0000000000..bf91018fc2
--- /dev/null
+++ b/drivers/clk/sunxi/clk_a10s.c
@@ -0,0 +1,56 @@ 
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2018 Amarula Solutions.
+ * Author: Jagan Teki <jagan@amarulasolutions.com>
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <errno.h>
+#include <asm/arch/ccu.h>
+#include <dt-bindings/clock/sun5i-ccu.h>
+#include <dt-bindings/reset/sun5i-ccu.h>
+
+static struct ccu_clk_gate a10s_gates[] = {
+	[CLK_AHB_OTG]		= GATE(0x060, BIT(0)),
+	[CLK_AHB_EHCI]		= GATE(0x060, BIT(1)),
+	[CLK_AHB_OHCI]		= GATE(0x060, BIT(2)),
+
+	[CLK_USB_OHCI]		= GATE(0x0cc, BIT(6)),
+	[CLK_USB_PHY0]		= GATE(0x0cc, BIT(8)),
+	[CLK_USB_PHY1]		= GATE(0x0cc, BIT(9)),
+};
+
+static struct ccu_reset a10s_resets[] = {
+	[RST_USB_PHY0]		= RESET(0x0cc, BIT(0)),
+	[RST_USB_PHY1]		= RESET(0x0cc, BIT(1)),
+};
+
+static const struct ccu_desc a10s_ccu_desc = {
+	.gates = a10s_gates,
+	.resets = a10s_resets,
+};
+
+static int a10s_clk_bind(struct udevice *dev)
+{
+	return sunxi_reset_bind(dev, ARRAY_SIZE(a10s_resets));
+}
+
+static const struct udevice_id a10s_ccu_ids[] = {
+	{ .compatible = "allwinner,sun5i-a10s-ccu",
+	  .data = (ulong)&a10s_ccu_desc },
+	{ .compatible = "allwinner,sun5i-a13-ccu",
+	  .data = (ulong)&a10s_ccu_desc },
+	{ }
+};
+
+U_BOOT_DRIVER(clk_sun5i_a10s) = {
+	.name		= "sun5i_a10s_ccu",
+	.id		= UCLASS_CLK,
+	.of_match	= a10s_ccu_ids,
+	.priv_auto_alloc_size	= sizeof(struct ccu_priv),
+	.ops		= &sunxi_clk_ops,
+	.probe		= sunxi_clk_probe,
+	.bind		= a10s_clk_bind,
+};