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author | Tom Rini <trini@konsulko.com> | 2021-01-12 23:46:52 +0300 |
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committer | Tom Rini <trini@konsulko.com> | 2021-01-13 15:32:02 +0300 |
commit | 795f8fd0b591eef7cf3f8c6fcf9788280029cc4a (patch) | |
tree | 71c2e050efcf18e76ce81f804f55f236df98cf68 /drivers/clk/meson | |
parent | ee6726be4f0dccb612f0193c62ca149164c8a5af (diff) | |
parent | 6bfa331a6e22507ae839fb8474ce1b3fd58808df (diff) | |
download | u-boot-795f8fd0b591eef7cf3f8c6fcf9788280029cc4a.tar.xz |
Merge tag 'u-boot-amlogic-20210112' of https://gitlab.denx.de/u-boot/custodians/u-boot-amlogic
- sync amlogic GX & AXG DT to Linux 5.10
- Add new MESON_EE driver support for GXBB & AXG
- Add support for Libretech-CC v2, Wetek Core2, Beelink GT-King/Pro boards
- add driver for TDO tl070wsh30 panel driver
- meson: isolate loading of socinfo
- Add soc_rev to environment
- Enable G12A support for saradc
- Add correct mmcdev on VIM3(L) & Odroid-N2(C4)
- Read MAC from fuses for VIM3 & VIM3L boards
Diffstat (limited to 'drivers/clk/meson')
-rw-r--r-- | drivers/clk/meson/Makefile | 1 | ||||
-rw-r--r-- | drivers/clk/meson/g12a-ao.c | 83 |
2 files changed, 84 insertions, 0 deletions
diff --git a/drivers/clk/meson/Makefile b/drivers/clk/meson/Makefile index c873d6976f..7204383e17 100644 --- a/drivers/clk/meson/Makefile +++ b/drivers/clk/meson/Makefile @@ -6,4 +6,5 @@ obj-$(CONFIG_CLK_MESON_GX) += gxbb.o obj-$(CONFIG_CLK_MESON_AXG) += axg.o obj-$(CONFIG_CLK_MESON_G12A) += g12a.o +obj-$(CONFIG_CLK_MESON_G12A) += g12a-ao.o diff --git a/drivers/clk/meson/g12a-ao.c b/drivers/clk/meson/g12a-ao.c new file mode 100644 index 0000000000..0148529e04 --- /dev/null +++ b/drivers/clk/meson/g12a-ao.c @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <common.h> +#include <log.h> +#include <asm/io.h> +#include <clk-uclass.h> +#include <dm.h> +#include <regmap.h> +#include <syscon.h> +#include <dt-bindings/clock/g12a-aoclkc.h> + +#include "clk_meson.h" + +struct meson_clk { + struct regmap *map; +}; + +#define AO_CLK_GATE0 0x4c +#define AO_SAR_CLK 0x90 + +static struct meson_gate gates[] = { + MESON_GATE(CLKID_AO_SAR_ADC, AO_CLK_GATE0, 8), + MESON_GATE(CLKID_AO_SAR_ADC_CLK, AO_SAR_CLK, 8), +}; + +static int meson_set_gate(struct clk *clk, bool on) +{ + struct meson_clk *priv = dev_get_priv(clk->dev); + struct meson_gate *gate; + + if (clk->id >= ARRAY_SIZE(gates)) + return -ENOENT; + + gate = &gates[clk->id]; + + if (gate->reg == 0) + return 0; + + regmap_update_bits(priv->map, gate->reg, + BIT(gate->bit), on ? BIT(gate->bit) : 0); + + return 0; +} + +static int meson_clk_enable(struct clk *clk) +{ + return meson_set_gate(clk, true); +} + +static int meson_clk_disable(struct clk *clk) +{ + return meson_set_gate(clk, false); +} + +static int meson_clk_probe(struct udevice *dev) +{ + struct meson_clk *priv = dev_get_priv(dev); + + priv->map = syscon_node_to_regmap(dev_ofnode(dev_get_parent(dev))); + if (IS_ERR(priv->map)) + return PTR_ERR(priv->map); + + return 0; +} + +static struct clk_ops meson_clk_ops = { + .disable = meson_clk_disable, + .enable = meson_clk_enable, +}; + +static const struct udevice_id meson_clk_ids[] = { + { .compatible = "amlogic,meson-g12a-aoclkc" }, + { } +}; + +U_BOOT_DRIVER(meson_clk_axg) = { + .name = "meson_clk_g12a_ao", + .id = UCLASS_CLK, + .of_match = meson_clk_ids, + .priv_auto = sizeof(struct meson_clk), + .ops = &meson_clk_ops, + .probe = meson_clk_probe, +}; |