diff options
author | Sean Wang <sean.wang@mediatek.com> | 2018-04-27 10:14:46 +0200 |
---|---|---|
committer | Stephen Boyd <sboyd@kernel.org> | 2018-05-16 00:21:36 +0200 |
commit | a11ca689695118b367f59cc837f78c8fb414951d (patch) | |
tree | f4fe273dc3275437882da32da6ab38d73e8482f2 /drivers/clk/mediatek | |
parent | dt-bindings: reset: mediatek: add entry for Mali-450 node to refer (diff) | |
download | linux-a11ca689695118b367f59cc837f78c8fb414951d.tar.xz linux-a11ca689695118b367f59cc837f78c8fb414951d.zip |
clk: mediatek: add g3dsys support for MT2701 and MT7623
Add clock driver support for g3dsys on MT2701 and MT7623, which is
providing essential clock gate and reset controller to Mali-450.
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/mediatek')
-rw-r--r-- | drivers/clk/mediatek/Kconfig | 6 | ||||
-rw-r--r-- | drivers/clk/mediatek/Makefile | 1 | ||||
-rw-r--r-- | drivers/clk/mediatek/clk-mt2701-g3d.c | 95 |
3 files changed, 102 insertions, 0 deletions
diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig index 92afe5989e97..3dd1dab92223 100644 --- a/drivers/clk/mediatek/Kconfig +++ b/drivers/clk/mediatek/Kconfig @@ -60,6 +60,12 @@ config COMMON_CLK_MT2701_AUDSYS ---help--- This driver supports Mediatek MT2701 audsys clocks. +config COMMON_CLK_MT2701_G3DSYS + bool "Clock driver for MediaTek MT2701 g3dsys" + depends on COMMON_CLK_MT2701 + ---help--- + This driver supports MediaTek MT2701 g3dsys clocks. + config COMMON_CLK_MT2712 bool "Clock driver for MediaTek MT2712" depends on (ARCH_MEDIATEK && ARM64) || COMPILE_TEST diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile index b80eff2abb31..844b55d2770d 100644 --- a/drivers/clk/mediatek/Makefile +++ b/drivers/clk/mediatek/Makefile @@ -9,6 +9,7 @@ obj-$(CONFIG_COMMON_CLK_MT2701) += clk-mt2701.o obj-$(CONFIG_COMMON_CLK_MT2701_AUDSYS) += clk-mt2701-aud.o obj-$(CONFIG_COMMON_CLK_MT2701_BDPSYS) += clk-mt2701-bdp.o obj-$(CONFIG_COMMON_CLK_MT2701_ETHSYS) += clk-mt2701-eth.o +obj-$(CONFIG_COMMON_CLK_MT2701_G3DSYS) += clk-mt2701-g3d.o obj-$(CONFIG_COMMON_CLK_MT2701_HIFSYS) += clk-mt2701-hif.o obj-$(CONFIG_COMMON_CLK_MT2701_IMGSYS) += clk-mt2701-img.o obj-$(CONFIG_COMMON_CLK_MT2701_MMSYS) += clk-mt2701-mm.o diff --git a/drivers/clk/mediatek/clk-mt2701-g3d.c b/drivers/clk/mediatek/clk-mt2701-g3d.c new file mode 100644 index 000000000000..1328c112a38f --- /dev/null +++ b/drivers/clk/mediatek/clk-mt2701-g3d.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018 MediaTek Inc. + * Author: Sean Wang <sean.wang@mediatek.com> + * + */ + +#include <linux/clk-provider.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> + +#include "clk-mtk.h" +#include "clk-gate.h" + +#include <dt-bindings/clock/mt2701-clk.h> + +#define GATE_G3D(_id, _name, _parent, _shift) { \ + .id = _id, \ + .name = _name, \ + .parent_name = _parent, \ + .regs = &g3d_cg_regs, \ + .shift = _shift, \ + .ops = &mtk_clk_gate_ops_setclr, \ + } + +static const struct mtk_gate_regs g3d_cg_regs = { + .sta_ofs = 0x0, + .set_ofs = 0x4, + .clr_ofs = 0x8, +}; + +static const struct mtk_gate g3d_clks[] = { + GATE_G3D(CLK_G3DSYS_CORE, "g3d_core", "mfg_sel", 0), +}; + +static int clk_mt2701_g3dsys_init(struct platform_device *pdev) +{ + struct clk_onecell_data *clk_data; + struct device_node *node = pdev->dev.of_node; + int r; + + clk_data = mtk_alloc_clk_data(CLK_G3DSYS_NR); + + mtk_clk_register_gates(node, g3d_clks, ARRAY_SIZE(g3d_clks), + clk_data); + + r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); + if (r) + dev_err(&pdev->dev, + "could not register clock provider: %s: %d\n", + pdev->name, r); + + mtk_register_reset_controller(node, 1, 0xc); + + return r; +} + +static const struct of_device_id of_match_clk_mt2701_g3d[] = { + { + .compatible = "mediatek,mt2701-g3dsys", + .data = clk_mt2701_g3dsys_init, + }, { + /* sentinel */ + } +}; + +static int clk_mt2701_g3d_probe(struct platform_device *pdev) +{ + int (*clk_init)(struct platform_device *); + int r; + + clk_init = of_device_get_match_data(&pdev->dev); + if (!clk_init) + return -EINVAL; + + r = clk_init(pdev); + if (r) + dev_err(&pdev->dev, + "could not register clock provider: %s: %d\n", + pdev->name, r); + + return r; +} + +static struct platform_driver clk_mt2701_g3d_drv = { + .probe = clk_mt2701_g3d_probe, + .driver = { + .name = "clk-mt2701-g3d", + .of_match_table = of_match_clk_mt2701_g3d, + }, +}; + +builtin_platform_driver(clk_mt2701_g3d_drv); |