Add initial clock driver for Allwinner A23.
- Implement USB bus and USB clocks via ccu_clk_map descriptor
for A23, so it can accessed in common clk enable and disable
functions from clk_sunxi.c
- Implement USB bus and USB resets via ccu_reset_map descriptor
for A23, so it can accessed in common reset deassert and assert
functions from reset-sunxi.c
Signed-off-by: Jagan Teki <ja...@amarulasolutions.com>
---
drivers/clk/sunxi/Kconfig | 7 ++++
drivers/clk/sunxi/Makefile | 1 +
drivers/clk/sunxi/clk_a23.c | 79 +++++++++++++++++++++++++++++++++++++
3 files changed, 87 insertions(+)
create mode 100644 drivers/clk/sunxi/clk_a23.c
diff --git a/drivers/clk/sunxi/Kconfig b/drivers/clk/sunxi/Kconfig
index 535b0dc02c..54600e8e1f 100644
--- a/drivers/clk/sunxi/Kconfig
+++ b/drivers/clk/sunxi/Kconfig
@@ -30,6 +30,13 @@ config CLK_SUN6I_A31
This enables common clock driver support for platforms based
on Allwinner A31/A31s SoC.
+config CLK_SUN8I_A23
+ bool "Clock driver for Allwinner A23"
+ default MACH_SUN8I_A23
+ help
+ This enables common clock driver support for platforms based
+ on Allwinner A23 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 3cf0071b0c..6924897036 100644
--- a/drivers/clk/sunxi/Makefile
+++ b/drivers/clk/sunxi/Makefile
@@ -9,5 +9,6 @@ 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_SUN6I_A31) += clk_a31.o
+obj-$(CONFIG_CLK_SUN8I_A23) += clk_a23.o
obj-$(CONFIG_CLK_SUN8I_H3) += clk_h3.o
obj-$(CONFIG_CLK_SUN50I_A64) += clk_a64.o
diff --git a/drivers/clk/sunxi/clk_a23.c b/drivers/clk/sunxi/clk_a23.c
new file mode 100644
index 0000000000..799c8ac0aa
--- /dev/null
+++ b/drivers/clk/sunxi/clk_a23.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2018 Amarula Solutions B.V.
+ * Author: Jagan Teki <ja...@amarulasolutions.com>
+ */
+
+#include <common.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <errno.h>
+#include <asm/arch/ccu.h>
+#include <dt-bindings/clock/sun8i-a23-a33-ccu.h>
+#include <dt-bindings/reset/sun8i-a23-a33-ccu.h>
+
+static struct ccu_clk_map a23_clks[] = {
+ [CLK_BUS_OTG] = { 0x060, BIT(24), NULL },
+ [CLK_BUS_EHCI] = { 0x060, BIT(26), NULL },
+ [CLK_BUS_OHCI] = { 0x060, BIT(29), NULL },
+
+ [CLK_USB_PHY0] = { 0x0cc, BIT(8), NULL },
+ [CLK_USB_PHY1] = { 0x0cc, BIT(9), NULL },
+ [CLK_USB_HSIC] = { 0x0cc, BIT(10), NULL },
+ [CLK_USB_HSIC_12M] = { 0x0cc, BIT(11), NULL },
+ [CLK_USB_OHCI] = { 0x0cc, BIT(16), NULL },
+};
+
+static struct ccu_reset_map a23_resets[] = {
+ [RST_USB_PHY0] = { 0x0cc, BIT(0) },
+ [RST_USB_PHY1] = { 0x0cc, BIT(1) },
+ [RST_USB_HSIC] = { 0x0cc, BIT(2) },
+
+ [RST_BUS_OTG] = { 0x2c0, BIT(24) },
+ [RST_BUS_EHCI] = { 0x2c0, BIT(26) },
+ [RST_BUS_OHCI] = { 0x2c0, BIT(29) },
+};
+
+static const struct ccu_desc sun8i_a23_ccu_desc = {
+ .clks = a23_clks,
+ .num_clks = ARRAY_SIZE(a23_clks),
+
+ .resets = a23_resets,
+ .num_resets = ARRAY_SIZE(a23_resets),
+};
+
+static int a23_clk_probe(struct udevice *dev)
+{
+ struct sunxi_clk_priv *priv = dev_get_priv(dev);
+
+ priv->base = dev_read_addr_ptr(dev);
+ if (!priv->base)
+ return -ENOMEM;
+
+ priv->desc = (const struct ccu_desc *)dev_get_driver_data(dev);
+ if (!priv->desc)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int a23_clk_bind(struct udevice *dev)
+{
+ return sunxi_reset_bind(dev, 39);
+}
+
+static const struct udevice_id a23_clk_ids[] = {
+ { .compatible = "allwinner,sun8i-a23-ccu",
+ .data = (ulong)&sun8i_a23_ccu_desc },
+ { }
+};
+
+U_BOOT_DRIVER(clk_sun8i_a23) = {
+ .name = "sun8i_a23_ccu",
+ .id = UCLASS_CLK,
+ .of_match = a23_clk_ids,
+ .priv_auto_alloc_size = sizeof(struct sunxi_clk_priv),
+ .ops = &sunxi_clk_ops,
+ .probe = a23_clk_probe,
+ .bind = a23_clk_bind,
+};
--
2.18.0.321.gffc6fa0e3
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