From e9862118272aa528e35e54ef9f1e35c217870fd7 Mon Sep 17 00:00:00 2001 From: Shunli Wang Date: Fri, 4 Nov 2016 15:43:05 +0800 Subject: clk: mediatek: Add MT2701 clock support Add MT2701 clock support, include topckgen, apmixedsys, infracfg, pericfg and subsystem clocks. Signed-off-by: Shunli Wang Signed-off-by: James Liao Signed-off-by: Erin Lo Tested-by: John Crispin Signed-off-by: Stephen Boyd --- drivers/clk/mediatek/clk-mt2701-eth.c | 80 +++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 drivers/clk/mediatek/clk-mt2701-eth.c (limited to 'drivers/clk/mediatek/clk-mt2701-eth.c') diff --git a/drivers/clk/mediatek/clk-mt2701-eth.c b/drivers/clk/mediatek/clk-mt2701-eth.c new file mode 100644 index 000000000000..877be8715afa --- /dev/null +++ b/drivers/clk/mediatek/clk-mt2701-eth.c @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2014 MediaTek Inc. + * Author: Shunli Wang + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include + +#include "clk-mtk.h" +#include "clk-gate.h" + +#include + +static const struct mtk_gate_regs eth_cg_regs = { + .sta_ofs = 0x0030, +}; + +#define GATE_ETH(_id, _name, _parent, _shift) { \ + .id = _id, \ + .name = _name, \ + .parent_name = _parent, \ + .regs = ð_cg_regs, \ + .shift = _shift, \ + .ops = &mtk_clk_gate_ops_no_setclr_inv, \ + } + +static const struct mtk_gate eth_clks[] = { + GATE_ETH(CLK_ETHSYS_HSDMA, "hsdma_clk", "ethif_sel", 5), + GATE_ETH(CLK_ETHSYS_ESW, "esw_clk", "ethpll_500m_ck", 6), + GATE_ETH(CLK_ETHSYS_GP2, "gp2_clk", "trgpll", 7), + GATE_ETH(CLK_ETHSYS_GP1, "gp1_clk", "ethpll_500m_ck", 8), + GATE_ETH(CLK_ETHSYS_PCM, "pcm_clk", "ethif_sel", 11), + GATE_ETH(CLK_ETHSYS_GDMA, "gdma_clk", "ethif_sel", 14), + GATE_ETH(CLK_ETHSYS_I2S, "i2s_clk", "ethif_sel", 17), + GATE_ETH(CLK_ETHSYS_CRYPTO, "crypto_clk", "ethif_sel", 29), +}; + +static const struct of_device_id of_match_clk_mt2701_eth[] = { + { .compatible = "mediatek,mt2701-ethsys", }, + {} +}; + +static int clk_mt2701_eth_probe(struct platform_device *pdev) +{ + struct clk_onecell_data *clk_data; + int r; + struct device_node *node = pdev->dev.of_node; + + clk_data = mtk_alloc_clk_data(CLK_ETHSYS_NR); + + mtk_clk_register_gates(node, eth_clks, ARRAY_SIZE(eth_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); + + return r; +} + +static struct platform_driver clk_mt2701_eth_drv = { + .probe = clk_mt2701_eth_probe, + .driver = { + .name = "clk-mt2701-eth", + .of_match_table = of_match_clk_mt2701_eth, + }, +}; + +builtin_platform_driver(clk_mt2701_eth_drv); -- cgit v1.2.3