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Mon, 14 Dec 2020 11:24:48 +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 1/6] clk: meson: add minimal driver for g12a-ao clocks Date: Mon, 14 Dec 2020 12:24:32 +0100 Message-Id: <20201214112437.18757-2-m.szyprowski@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201214112437.18757-1-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupkleLIzCtJLcpLzFFi42LZduznOd1G7+vxBn2PjCw2zljPanHjVxur xfN3l5ks1h65y25xqC/aouOwssW3LdsYLSZN+MVm8XZvJ7vF4akfGB24PN7faGX3mN1wkcVj 3qwTLB4fPsZ5zO/8zuRx9s4ORo++LasYPTYuO8AcwBHFZZOSmpNZllqkb5fAlXFp0xKmgq+i FQsPn2BvYFwl1MXIySEhYCIx69wJVhBbSGAFo8TTo4FdjFxA9hdGiVOPrrJDOJ8ZJTafv8nY xcgB1tHepQsRX84o0bRuJTtcx9zbi9hARrEJGEp0ve0Cs0UEjCQuNe1gASliFrjDJNE1uYEF ZJKwgJtE+7UakBoWAVWJfQs/g4V5BWwl7s8xhrhOXmL1hgPMIDangJ3Exrlr2UDGSAgc4ZD4 9GMNC0SRi8SKa5PZIGxhiVfHt7BD2DISpyf3sEA0NDNKPDy3lh3C6WGUuNw0gxGiylrizrlf bCCbmQU0Jdbv0ocIO0qsOd/DCvExn8SNt4IgYWYgc9K26cwQYV6JjjZoKKpJzDq+Dm7twQuX mCFsD4lHn7qYIOEzEeiEVZuYJzDKz0JYtoCRcRWjeGppcW56arFxXmq5XnFibnFpXrpecn7u JkZgajn97/jXHYwrXn3UO8TIxMF4iFGCg1lJhPd3/eV4Id6UxMqq1KL8+KLSnNTiQ4zSHCxK 4ry7tq6JFxJITyxJzU5NLUgtgskycXBKNTAt4vuSHX2uTTF51wyL38/YS7/F7p+VsOOiBeOK EG9z9r9vBFbWOx348ed1+8xw5bW97A0XSkV5/+7ddfyDvdKqDxLHz8Tcf3S/ZXvStIKsUEeV /8cuvLR+2blrtv7+a30xyk1crgb/M3p2iF9/5+dU9/FdBGOcos9/tb+sVv6Pg6+HPdl31fpc lvNa0x4D7bOiaz7XhaVvmL84cInUmVI71bdTN5yM6a17Ju6peFfIf5bJZ+/bW3dZW/3/+SrW xf39q6VTPro9qm1a6Ltkx4wwgU1TOpdlLfqvZnRGUrSn7rnxfA+X4FlzjVS0wvZsiN/+kfHp omf3uDlNN138KfznU49Q0D/Nh+tLghoErztfVWIpzkg01GIuKk4EAJAaRtycAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrFLMWRmVeSWpSXmKPExsVy+t/xu7qN3tfjDRb2iVtsnLGe1eLGrzZW i+fvLjNZrD1yl93iUF+0RcdhZYtvW7YxWkya8IvN4u3eTnaLw1M/MDpweby/0cruMbvhIovH vFknWDw+fIzzmN/5ncnj7J0djB59W1YxemxcdoA5gCNKz6Yov7QkVSEjv7jEVina0MJIz9DS Qs/IxFLP0Ng81srIVEnfziYlNSezLLVI3y5BL+PSpiVMBV9FKxYePsHewLhKqIuRg0NCwESi vUu3i5GLQ0hgKaPE0r4dTF2MnEBxGYmT0xpYIWxhiT/Xutggij4xSrwGGgCSYBMwlOh6C5Lg 5BABGnSy6xIrSBGzwCMmiaddzewgG4QF3CTar9WA1LAIqErsW/iZBSTMK2ArcX+OMcR8eYnV Gw4wg9icAnYSG+euBRspBFQyf8kWlgmMfAsYGVYxiqSWFuem5xYb6hUn5haX5qXrJefnbmIE Bvq2Yz8372Cc9+qj3iFGJg7GQ4wSHMxKIry/6y/HC/GmJFZWpRblxxeV5qQWH2I0BTpjIrOU aHI+MNbySuINzQxMDU3MLA1MLc2MlcR5t85dEy8kkJ5YkpqdmlqQWgTTx8TBKdXAdEC+4c+F zDnv7KRnnYqY++shR2SiC/fRWcIBC0qTnuyuf6BiLxpYNeHF/3126xJYBTb22G6vlFoQUF6v ev9H1yKdhf6GTnfOlMqviF9w74TBz51BqeYThEL8mTk9KiO4Ge0Udy6RKDrr6Nbe6FX+fWmB 5ZeLMcEvjPcprJihYHdZ9P/51gSV7Kdrluia9n+IzhDNZ5WMdtHXsPp6ynPDQ+kTEg+WGGhX CTz6Mrst7MczOWVf/iphxq0tdaf/6DYHadn7NF2ctKeWx2entixfVdg987rLd+scdmTqLTlc xbzWKritIdn5V9x5ocPyqz8UrMtXEbrr+33qmbgbxStuzWu5sehjIwvTXb7mUCslluKMREMt 5qLiRAC2S1xK/QIAAA== X-CMS-MailID: 20201214112449eucas1p2ce0ef939e0d7f468e64be3555f29ea04 X-Msg-Generator: CA X-RootMTR: 20201214112449eucas1p2ce0ef939e0d7f468e64be3555f29ea04 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201214112449eucas1p2ce0ef939e0d7f468e64be3555f29ea04 References: <20201214112437.18757-1-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 Change-Id: I0c91848bc55493e19570db333e7da6020d687907 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 c873d6976fa..7204383e173 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 00000000000..7a0abea77c4 --- /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, +};