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Tue, 15 Dec 2020 14:42:41 +0000 (GMT) From: Marek Szyprowski To: u-boot@lists.denx.de, u-boot-amlogic@groups.io Cc: Marek Szyprowski , Neil Armstrong , Lukasz Majewski , Philippe Reynes , Simon Glass , Heinrich Schuchardt , Jaehoon Chung , Bartlomiej Zolnierkiewicz Subject: [PATCH v2 1/7] clk: meson: add minimal driver for g12a-ao clocks Date: Tue, 15 Dec 2020 15:42:24 +0100 Message-Id: <20201215144230.9235-2-m.szyprowski@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201215144230.9235-1-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFuphleLIzCtJLcpLzFFi42LZduznOd3k0zfiDa7/Y7bYOGM9q8WNX22s Fs/fXWayWHvkLrvFob5oi47DyhbftmxjtJg04Rebxdu9newWh6d+YHTg8nh/o5XdY3bDRRaP ebNOsHh8+BjnMb/zO5PH2Ts7GD36tqxi9Ni47ABzAEcUl01Kak5mWWqRvl0CV8bRpk8sBbfE KjZeesnawNgs3MXIySEhYCLx9N0qpi5GLg4hgRWMEp/2/IByvjBKTHvylQXC+cwocX7JDTaY ln3HelghEssZJQ68n88O1/Jk109WkCo2AUOJrrddYB0iAkYSl5p2gI1iFrjDJNE1uYEFJCEs 4CnRuKSZHcRmEVCVODjlKpjNK2AjcbnhDzvEOnmJ1RsOMIPYnAK2En8mrgLbJiGwh0Ni5a+X LBBFLhJ/9myBahCWeHUcxpaR+L9zPhNEQzOjxMNza6G6exglLjfNYISospa4c+4X0K0cQPdp SqzfpQ8RdpTY9m0dM0hYQoBP4sZbQZAwM5A5adt0qDCvREebEES1msSs4+vg1h68cIkZwvaQ 6OlpA1skJDCBUWLjkcAJjPKzEHYtYGRcxSieWlqcm55abJiXWq5XnJhbXJqXrpecn7uJEZhg Tv87/mkH49xXH/UOMTJxMB5ilOBgVhLh7S29Hi/Em5JYWZValB9fVJqTWnyIUZqDRUmcd9Xs NfFCAumJJanZqakFqUUwWSYOTqkGJnurtpD4ybdv2Mmd8e8wyuY/p/MwOKPJ6peqx+Tyt1OT GWXcProuPHdwxtvzKYfe/K01MmzlOyAeYygj7FomuOz71ldK/icfHG96Nkt7Q/8S08DT+kYK J2x2PNDc8qr9Y1Wa8rI+n4UKL39//FesUhewbvWS2cwrHsxmsNi0emlm8RmnHSVHtReKW/yq XewdGLRNfeqcf5UZt2M94+esuRmu2fE8c3F3UNVBx96fVTzKubIXJmyJmlfuG5nb+rGQf6Kw /X67jcnT9u474qTbe7DqVbf5uhkNq2q1NljLF/bxP859fNtxvekE89XT7pzc6OvJevL4oqcB nPIG4p5zDeycnxfU2lndScvfcNlMSImlOCPRUIu5qDgRAI4K/oSfAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrLLMWRmVeSWpSXmKPExsVy+t/xe7pJp2/EG6y7LGmxccZ6Vosbv9pY LZ6/u8xksfbIXXaLQ33RFh2HlS2+bdnGaDFpwi82i7d7O9ktDk/9wOjA5fH+Riu7x+yGiywe 82adYPH48DHOY37ndyaPs3d2MHr0bVnF6LFx2QHmAI4oPZui/NKSVIWM/OISW6VoQwsjPUNL Cz0jE0s9Q2PzWCsjUyV9O5uU1JzMstQifbsEvYyjTZ9YCm6JVWy89JK1gbFZuIuRk0NCwERi 37Ee1i5GLg4hgaWMEpv61zJDJGQkTk5rYIWwhSX+XOtigyj6xChx585GNpAEm4ChRNfbLjBb BGjSya5LYJOYBR4xSTztamYHSQgLeEo0LoGwWQRUJQ5OuQpm8wrYSFxu+MMOsUFeYvWGA2Cb OQVsJf5MXAUWFwKq+XlqC/sERr4FjAyrGEVSS4tz03OLjfSKE3OLS/PS9ZLzczcxAsN927Gf W3Ywrnz1Ue8QIxMH4yFGCQ5mJRHe3tLr8UK8KYmVValF+fFFpTmpxYcYTYHumMgsJZqcD4y4 vJJ4QzMDU0MTM0sDU0szYyVxXpMja+KFBNITS1KzU1MLUotg+pg4OKUamOwZbqomMpqw8fhe fvjG83Pw+x1MFwPkTS/sy1jOGsaqN/WJdRxDfcMSqbSvfx7Izym21yj++vbjodfut77HGQRk Pfy6XrMuOSpRQFL3XXq8VsfZmx0Ot51CAkVX9mw9eqrbd0t7iZDBsrB2uSPsLR4eXws5jaeb 1TP2eelcN/Q5mScT+DtpaXXL4pMS2Z+M5eb1fxfU7f0rtsr8QJJ4DYfaJvci381ve4q6zW8y dIpf2jPvb0DMrwlObpxfux7e0ZNY5v7M4cDabad2v3nesXVyIX9yRq398usly9I23nnyy+7e DsGgirbbhrW/pVqq8nLYss9c1Obe9mr5xrjvMv/VpkyLz+plXX83rKldiaU4I9FQi7moOBEA OpW2NwADAAA= X-CMS-MailID: 20201215144242eucas1p1ff9e7e4acd3ef9b86fa15a2cd4ac05a5 X-Msg-Generator: CA X-RootMTR: 20201215144242eucas1p1ff9e7e4acd3ef9b86fa15a2cd4ac05a5 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201215144242eucas1p1ff9e7e4acd3ef9b86fa15a2cd4ac05a5 References: <20201215144230.9235-1-m.szyprowski@samsung.com> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.3 at phobos.denx.de X-Virus-Status: Clean Add minimal driver AO clocks on meson G12A family. Only ADC related clocks are supported. Signed-off-by: Marek Szyprowski Reviewed-by: Neil Armstrong Tested-by: Jaehoon Chung Reviewed-by: Jaehoon Chung --- drivers/clk/meson/Makefile | 1 + drivers/clk/meson/g12a-ao.c | 83 +++++++++++++++++++++++++++++++++++++ 2 files changed, 84 insertions(+) create mode 100644 drivers/clk/meson/g12a-ao.c 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..7a0abea77c --- /dev/null +++ b/drivers/clk/meson/g12a-ao.c @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include +#include +#include +#include +#include +#include +#include +#include + +#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_get_parent(dev)->node); + 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_alloc_size = sizeof(struct meson_clk), + .ops = &meson_clk_ops, + .probe = meson_clk_probe, +};