diff --git a/Documentation/devicetree/bindings/clock/mediatek,mt7621-sysc.yaml b/Documentation/devicetree/bindings/clock/mediatek,mt7621-sysc.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..915f84efd7638bb2e47f17dbb6b25ca97a472e82
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/mediatek,mt7621-sysc.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/mediatek,mt7621-sysc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MT7621 Clock Device Tree Bindings
+
+maintainers:
+ - Sergio Paracuellos <sergio.paracuellos@gmail.com>
+
+description: |
+ The MT7621 has a PLL controller from where the cpu clock is provided
+ as well as derived clocks for the bus and the peripherals. It also
+ can gate SoC device clocks.
+
+ Each clock is assigned an identifier and client nodes use this identifier
+ to specify the clock which they consume.
+
+ All these identifiers could be found in:
+ [1]: <include/dt-bindings/clock/mt7621-clk.h>.
+
+ The clocks are provided inside a system controller node.
+
+properties:
+ compatible:
+ items:
+ - const: mediatek,mt7621-sysc
+ - const: syscon
+
+ reg:
+ maxItems: 1
+
+ "#clock-cells":
+ description:
+ The first cell indicates the clock number, see [1] for available
+ clocks.
+ const: 1
+
+ ralink,memctl:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ phandle of syscon used to control memory registers
+
+ clock-output-names:
+ maxItems: 8
+
+required:
+ - compatible
+ - reg
+ - '#clock-cells'
+ - ralink,memctl
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/mt7621-clk.h>
+
+ sysc: sysc@0 {
+ compatible = "mediatek,mt7621-sysc", "syscon";
+ reg = <0x0 0x100>;
+ #clock-cells = <1>;
+ ralink,memctl = <&memc>;
+ clock-output-names = "xtal", "cpu", "bus",
+ "50m", "125m", "150m",
+ "250m", "270m";
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index d92f85ca831d30d658fef768575ba538be4d4b93..5004577d5d63177a4b63c724ae7099d6ffe68094 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11295,6 +11295,12 @@ L: linux-wireless@vger.kernel.org
S: Maintained
F: drivers/net/wireless/mediatek/mt7601u/
+MEDIATEK MT7621 CLOCK DRIVER
+M: Sergio Paracuellos <sergio.paracuellos@gmail.com>
+S: Maintained
+F: Documentation/devicetree/bindings/clock/mediatek,mt7621-sysc.yaml
+F: drivers/clk/ralink/clk-mt7621.c
+
MEDIATEK MT7621/28/88 I2C DRIVER
M: Stefan Roese <sr@denx.de>
L: linux-i2c@vger.kernel.org
diff --git a/arch/mips/ralink/mt7621.c b/arch/mips/ralink/mt7621.c
index ca0ac607b0f3c923667188d66bf1f5157ffcc93c..5d74fc1c96acc18d6d44d92e15c7d34b080ac80b 100644
--- a/arch/mips/ralink/mt7621.c
+++ b/arch/mips/ralink/mt7621.c
@@ -112,8 +112,8 @@ phys_addr_t mips_cpc_default_phys_base(void)
void __init ralink_of_remap(void)
{
- rt_sysc_membase = plat_of_remap_node("mtk,mt7621-sysc");
- rt_memc_membase = plat_of_remap_node("mtk,mt7621-memc");
+ rt_sysc_membase = plat_of_remap_node("mediatek,mt7621-sysc");
+ rt_memc_membase = plat_of_remap_node("mediatek,mt7621-memc");
if (!rt_sysc_membase || !rt_memc_membase)
panic("Failed to remap core resources");
@@ -181,7 +181,7 @@ void prom_soc_init(struct ralink_soc_info *soc_info)
if (n0 == MT7621_CHIP_NAME0 && n1 == MT7621_CHIP_NAME1) {
name = "MT7621";
- soc_info->compatible = "mtk,mt7621-soc";
+ soc_info->compatible = "mediatek,mt7621-soc";
} else {
panic("mt7621: unknown SoC, n0:%08x n1:%08x\n", n0, n1);
}
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index a588d56502d40a07ae65654752161fbf58dc33ab..ce11394021bbbd8644b5fcf7a6dbf675d5aaa766 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -390,6 +390,7 @@ source "drivers/clk/meson/Kconfig"
source "drivers/clk/mstar/Kconfig"
source "drivers/clk/mvebu/Kconfig"
source "drivers/clk/qcom/Kconfig"
+source "drivers/clk/ralink/Kconfig"
source "drivers/clk/renesas/Kconfig"
source "drivers/clk/rockchip/Kconfig"
source "drivers/clk/samsung/Kconfig"
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index b22ae4f81e0b33c375e1c28f9caa8247b662512a..7af7d213116fa0edbc14ae9e9b162b31cb0a7eda 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -100,6 +100,7 @@ obj-$(CONFIG_COMMON_CLK_NXP) += nxp/
obj-$(CONFIG_MACH_PISTACHIO) += pistachio/
obj-$(CONFIG_COMMON_CLK_PXA) += pxa/
obj-$(CONFIG_COMMON_CLK_QCOM) += qcom/
+obj-y += ralink/
obj-y += renesas/
obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip/
obj-$(CONFIG_COMMON_CLK_SAMSUNG) += samsung/
diff --git a/drivers/clk/ralink/Kconfig b/drivers/clk/ralink/Kconfig
new file mode 100644
index 0000000000000000000000000000000000000000..6580d5edc676be67aa8d0a8d6577f82cd10a3695
--- /dev/null
+++ b/drivers/clk/ralink/Kconfig
@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# MediaTek Mt7621 Clock Driver
+#
+config CLK_MT7621
+ bool "Clock driver for MediaTek MT7621"
+ depends on SOC_MT7621 || COMPILE_TEST
+ default SOC_MT7621
+ select MFD_SYSCON
+ help
+ This driver supports MediaTek MT7621 basic clocks.
diff --git a/drivers/clk/ralink/Makefile b/drivers/clk/ralink/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..cf6f9216379d92de07eeaa57f65afd066dcc969f
--- /dev/null
+++ b/drivers/clk/ralink/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_CLK_MT7621) += clk-mt7621.o
diff --git a/drivers/clk/ralink/clk-mt7621.c b/drivers/clk/ralink/clk-mt7621.c
new file mode 100644
index 0000000000000000000000000000000000000000..857da1e274be9ef265294934566e3f30c7bd4801
--- /dev/null
+++ b/drivers/clk/ralink/clk-mt7621.c
@@ -0,0 +1,495 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Mediatek MT7621 Clock Driver
+ * Author: Sergio Paracuellos <sergio.paracuellos@gmail.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/clk-provider.h>
+#include <linux/clk.h>
+#include <linux/mfd/syscon.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <dt-bindings/clock/mt7621-clk.h>
+
+/* Configuration registers */
+#define SYSC_REG_SYSTEM_CONFIG0 0x10
+#define SYSC_REG_SYSTEM_CONFIG1 0x14
+#define SYSC_REG_CLKCFG0 0x2c
+#define SYSC_REG_CLKCFG1 0x30
+#define SYSC_REG_CUR_CLK_STS 0x44
+#define MEMC_REG_CPU_PLL 0x648
+
+#define XTAL_MODE_SEL_MASK GENMASK(8, 6)
+#define CPU_CLK_SEL_MASK GENMASK(31, 30)
+#define CUR_CPU_FDIV_MASK GENMASK(12, 8)
+#define CUR_CPU_FFRAC_MASK GENMASK(4, 0)
+#define CPU_PLL_PREDIV_MASK GENMASK(13, 12)
+#define CPU_PLL_FBDIV_MASK GENMASK(10, 4)
+
+struct mt7621_clk_priv {
+ struct regmap *sysc;
+ struct regmap *memc;
+};
+
+struct mt7621_clk {
+ struct clk_hw hw;
+ struct mt7621_clk_priv *priv;
+};
+
+struct mt7621_fixed_clk {
+ u8 idx;
+ const char *name;
+ const char *parent_name;
+ unsigned long rate;
+ struct clk_hw *hw;
+};
+
+struct mt7621_gate {
+ u8 idx;
+ const char *name;
+ const char *parent_name;
+ struct mt7621_clk_priv *priv;
+ u32 bit_idx;
+ struct clk_hw hw;
+};
+
+#define GATE(_id, _name, _pname, _shift) \
+ { \
+ .idx = _id, \
+ .name = _name, \
+ .parent_name = _pname, \
+ .bit_idx = _shift \
+ }
+
+static struct mt7621_gate mt7621_gates[] = {
+ GATE(MT7621_CLK_HSDMA, "hsdma", "150m", BIT(5)),
+ GATE(MT7621_CLK_FE, "fe", "250m", BIT(6)),
+ GATE(MT7621_CLK_SP_DIVTX, "sp_divtx", "270m", BIT(7)),
+ GATE(MT7621_CLK_TIMER, "timer", "50m", BIT(8)),
+ GATE(MT7621_CLK_PCM, "pcm", "270m", BIT(11)),
+ GATE(MT7621_CLK_PIO, "pio", "50m", BIT(13)),
+ GATE(MT7621_CLK_GDMA, "gdma", "bus", BIT(14)),
+ GATE(MT7621_CLK_NAND, "nand", "125m", BIT(15)),
+ GATE(MT7621_CLK_I2C, "i2c", "50m", BIT(16)),
+ GATE(MT7621_CLK_I2S, "i2s", "270m", BIT(17)),
+ GATE(MT7621_CLK_SPI, "spi", "bus", BIT(18)),
+ GATE(MT7621_CLK_UART1, "uart1", "50m", BIT(19)),
+ GATE(MT7621_CLK_UART2, "uart2", "50m", BIT(20)),
+ GATE(MT7621_CLK_UART3, "uart3", "50m", BIT(21)),
+ GATE(MT7621_CLK_ETH, "eth", "50m", BIT(23)),
+ GATE(MT7621_CLK_PCIE0, "pcie0", "125m", BIT(24)),
+ GATE(MT7621_CLK_PCIE1, "pcie1", "125m", BIT(25)),
+ GATE(MT7621_CLK_PCIE2, "pcie2", "125m", BIT(26)),
+ GATE(MT7621_CLK_CRYPTO, "crypto", "250m", BIT(29)),
+ GATE(MT7621_CLK_SHXC, "shxc", "50m", BIT(30))
+};
+
+static inline struct mt7621_gate *to_mt7621_gate(struct clk_hw *hw)
+{
+ return container_of(hw, struct mt7621_gate, hw);
+}
+
+static int mt7621_gate_enable(struct clk_hw *hw)
+{
+ struct mt7621_gate *clk_gate = to_mt7621_gate(hw);
+ struct regmap *sysc = clk_gate->priv->sysc;
+
+ return regmap_update_bits(sysc, SYSC_REG_CLKCFG1,
+ clk_gate->bit_idx, clk_gate->bit_idx);
+}
+
+static void mt7621_gate_disable(struct clk_hw *hw)
+{
+ struct mt7621_gate *clk_gate = to_mt7621_gate(hw);
+ struct regmap *sysc = clk_gate->priv->sysc;
+
+ regmap_update_bits(sysc, SYSC_REG_CLKCFG1, clk_gate->bit_idx, 0);
+}
+
+static int mt7621_gate_is_enabled(struct clk_hw *hw)
+{
+ struct mt7621_gate *clk_gate = to_mt7621_gate(hw);
+ struct regmap *sysc = clk_gate->priv->sysc;
+ u32 val;
+
+ if (regmap_read(sysc, SYSC_REG_CLKCFG1, &val))
+ return 0;
+
+ return val & BIT(clk_gate->bit_idx);
+}
+
+static const struct clk_ops mt7621_gate_ops = {
+ .enable = mt7621_gate_enable,
+ .disable = mt7621_gate_disable,
+ .is_enabled = mt7621_gate_is_enabled,
+};
+
+static int mt7621_gate_ops_init(struct device *dev,
+ struct mt7621_gate *sclk)
+{
+ struct clk_init_data init = {
+ /*
+ * Until now no clock driver existed so
+ * these SoC drivers are not prepared
+ * yet for the clock. We don't want kernel to
+ * disable anything so we add CLK_IS_CRITICAL
+ * flag here.
+ */
+ .flags = CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
+ .num_parents = 1,
+ .parent_names = &sclk->parent_name,
+ .ops = &mt7621_gate_ops,
+ .name = sclk->name,
+ };
+
+ sclk->hw.init = &init;
+ return devm_clk_hw_register(dev, &sclk->hw);
+}
+
+static int mt7621_register_gates(struct device *dev,
+ struct clk_hw_onecell_data *clk_data,
+ struct mt7621_clk_priv *priv)
+{
+ struct clk_hw **hws = clk_data->hws;
+ struct mt7621_gate *sclk;
+ int ret, i;
+
+ for (i = 0; i < ARRAY_SIZE(mt7621_gates); i++) {
+ sclk = &mt7621_gates[i];
+ sclk->priv = priv;
+ ret = mt7621_gate_ops_init(dev, sclk);
+ if (ret) {
+ dev_err(dev, "Couldn't register clock %s\n", sclk->name);
+ goto err_clk_unreg;
+ }
+
+ hws[sclk->idx] = &sclk->hw;
+ }
+
+ return 0;
+
+err_clk_unreg:
+ while (--i >= 0) {
+ sclk = &mt7621_gates[i];
+ clk_hw_unregister(&sclk->hw);
+ }
+ return ret;
+}
+
+#define FIXED(_id, _name, _rate) \
+ { \
+ .idx = _id, \
+ .name = _name, \
+ .parent_name = "xtal", \
+ .rate = _rate \
+ }
+
+static struct mt7621_fixed_clk mt7621_fixed_clks[] = {
+ FIXED(MT7621_CLK_50M, "50m", 50000000),
+ FIXED(MT7621_CLK_125M, "125m", 125000000),
+ FIXED(MT7621_CLK_150M, "150m", 150000000),
+ FIXED(MT7621_CLK_250M, "250m", 250000000),
+ FIXED(MT7621_CLK_270M, "270m", 270000000),
+};
+
+static int mt7621_register_fixed_clocks(struct device *dev,
+ struct clk_hw_onecell_data *clk_data)
+{
+ struct clk_hw **hws = clk_data->hws;
+ struct mt7621_fixed_clk *sclk;
+ int ret, i;
+
+ for (i = 0; i < ARRAY_SIZE(mt7621_fixed_clks); i++) {
+ sclk = &mt7621_fixed_clks[i];
+ sclk->hw = clk_hw_register_fixed_rate(dev, sclk->name,
+ sclk->parent_name, 0,
+ sclk->rate);
+ if (IS_ERR(sclk->hw)) {
+ dev_err(dev, "Couldn't register clock %s\n", sclk->name);
+ ret = PTR_ERR(sclk->hw);
+ goto err_clk_unreg;
+ }
+
+ hws[sclk->idx] = sclk->hw;
+ }
+
+ return 0;
+
+err_clk_unreg:
+ while (--i >= 0) {
+ sclk = &mt7621_fixed_clks[i];
+ clk_hw_unregister_fixed_rate(sclk->hw);
+ }
+ return ret;
+}
+
+static inline struct mt7621_clk *to_mt7621_clk(struct clk_hw *hw)
+{
+ return container_of(hw, struct mt7621_clk, hw);
+}
+
+static unsigned long mt7621_xtal_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct mt7621_clk *clk = to_mt7621_clk(hw);
+ struct regmap *sysc = clk->priv->sysc;
+ u32 val;
+
+ regmap_read(sysc, SYSC_REG_SYSTEM_CONFIG0, &val);
+ val = FIELD_GET(XTAL_MODE_SEL_MASK, val);
+
+ if (val <= 2)
+ return 20000000;
+ if (val <= 5)
+ return 40000000;
+
+ return 25000000;
+}
+
+static unsigned long mt7621_cpu_recalc_rate(struct clk_hw *hw,
+ unsigned long xtal_clk)
+{
+ static const u32 prediv_tbl[] = { 0, 1, 2, 2 };
+ struct mt7621_clk *clk = to_mt7621_clk(hw);
+ struct regmap *sysc = clk->priv->sysc;
+ struct regmap *memc = clk->priv->memc;
+ u32 clkcfg, clk_sel, curclk, ffiv, ffrac;
+ u32 pll, prediv, fbdiv;
+ unsigned long cpu_clk;
+
+ regmap_read(sysc, SYSC_REG_CLKCFG0, &clkcfg);
+ clk_sel = FIELD_GET(CPU_CLK_SEL_MASK, clkcfg);
+
+ regmap_read(sysc, SYSC_REG_CUR_CLK_STS, &curclk);
+ ffiv = FIELD_GET(CUR_CPU_FDIV_MASK, curclk);
+ ffrac = FIELD_GET(CUR_CPU_FFRAC_MASK, curclk);
+
+ switch (clk_sel) {
+ case 0:
+ cpu_clk = 500000000;
+ break;
+ case 1:
+ regmap_read(memc, MEMC_REG_CPU_PLL, &pll);
+ fbdiv = FIELD_GET(CPU_PLL_FBDIV_MASK, pll);
+ prediv = FIELD_GET(CPU_PLL_PREDIV_MASK, pll);
+ cpu_clk = ((fbdiv + 1) * xtal_clk) >> prediv_tbl[prediv];
+ break;
+ default:
+ cpu_clk = xtal_clk;
+ }
+
+ return cpu_clk / ffiv * ffrac;
+}
+
+static unsigned long mt7621_bus_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ return parent_rate / 4;
+}
+
+#define CLK_BASE(_name, _parent, _recalc) { \
+ .init = &(struct clk_init_data) { \
+ .name = _name, \
+ .ops = &(const struct clk_ops) { \
+ .recalc_rate = _recalc, \
+ }, \
+ .parent_data = &(const struct clk_parent_data) { \
+ .name = _parent, \
+ .fw_name = _parent \
+ }, \
+ .num_parents = _parent ? 1 : 0 \
+ }, \
+}
+
+static struct mt7621_clk mt7621_clks_base[] = {
+ { CLK_BASE("xtal", NULL, mt7621_xtal_recalc_rate) },
+ { CLK_BASE("cpu", "xtal", mt7621_cpu_recalc_rate) },
+ { CLK_BASE("bus", "cpu", mt7621_bus_recalc_rate) },
+};
+
+static struct clk_hw *mt7621_clk_early[MT7621_CLK_MAX];
+
+static int mt7621_register_early_clocks(struct device_node *np,
+ struct clk_hw_onecell_data *clk_data,
+ struct mt7621_clk_priv *priv)
+{
+ struct clk_hw **hws = clk_data->hws;
+ struct mt7621_clk *sclk;
+ int ret, i, j;
+
+ for (i = 0; i < ARRAY_SIZE(mt7621_clks_base); i++) {
+ sclk = &mt7621_clks_base[i];
+ sclk->priv = priv;
+ ret = of_clk_hw_register(np, &sclk->hw);
+ if (ret) {
+ pr_err("Couldn't register top clock %i\n", i);
+ goto err_clk_unreg;
+ }
+
+ hws[i] = &sclk->hw;
+ mt7621_clk_early[i] = &sclk->hw;
+ }
+
+ for (j = i; j < MT7621_CLK_MAX; j++)
+ mt7621_clk_early[j] = ERR_PTR(-EPROBE_DEFER);
+
+ return 0;
+
+err_clk_unreg:
+ while (--i >= 0) {
+ sclk = &mt7621_clks_base[i];
+ clk_hw_unregister(&sclk->hw);
+ }
+ return ret;
+}
+
+static void __init mt7621_clk_init(struct device_node *node)
+{
+ struct mt7621_clk_priv *priv;
+ struct clk_hw_onecell_data *clk_data;
+ int ret, i, count;
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return;
+
+ priv->sysc = syscon_node_to_regmap(node);
+ if (IS_ERR(priv->sysc)) {
+ pr_err("Could not get sysc syscon regmap\n");
+ goto free_clk_priv;
+ }
+
+ priv->memc = syscon_regmap_lookup_by_phandle(node, "ralink,memctl");
+ if (IS_ERR(priv->memc)) {
+ pr_err("Could not get memc syscon regmap\n");
+ goto free_clk_priv;
+ }
+
+ count = ARRAY_SIZE(mt7621_clks_base) +
+ ARRAY_SIZE(mt7621_fixed_clks) + ARRAY_SIZE(mt7621_gates);
+ clk_data = kzalloc(struct_size(clk_data, hws, count), GFP_KERNEL);
+ if (!clk_data)
+ goto free_clk_priv;
+
+ ret = mt7621_register_early_clocks(node, clk_data, priv);
+ if (ret) {
+ pr_err("Couldn't register top clocks\n");
+ goto free_clk_data;
+ }
+
+ clk_data->num = count;
+
+ ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
+ if (ret) {
+ pr_err("Couldn't add clk hw provider\n");
+ goto unreg_clk_top;
+ }
+
+ return;
+
+unreg_clk_top:
+ for (i = 0; i < ARRAY_SIZE(mt7621_clks_base); i++) {
+ struct mt7621_clk *sclk = &mt7621_clks_base[i];
+
+ clk_hw_unregister(&sclk->hw);
+ }
+
+free_clk_data:
+ kfree(clk_data);
+
+free_clk_priv:
+ kfree(priv);
+}
+CLK_OF_DECLARE_DRIVER(mt7621_clk, "mediatek,mt7621-sysc", mt7621_clk_init);
+
+static int mt7621_clk_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct clk_hw_onecell_data *clk_data;
+ struct device *dev = &pdev->dev;
+ struct mt7621_clk_priv *priv;
+ int ret, i, count;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->sysc = syscon_node_to_regmap(np);
+ if (IS_ERR(priv->sysc)) {
+ ret = PTR_ERR(priv->sysc);
+ dev_err(dev, "Could not get sysc syscon regmap\n");
+ return ret;
+ }
+
+ priv->memc = syscon_regmap_lookup_by_phandle(np, "ralink,memctl");
+ if (IS_ERR(priv->memc)) {
+ ret = PTR_ERR(priv->memc);
+ dev_err(dev, "Could not get memc syscon regmap\n");
+ return ret;
+ }
+
+ count = ARRAY_SIZE(mt7621_clks_base) +
+ ARRAY_SIZE(mt7621_fixed_clks) + ARRAY_SIZE(mt7621_gates);
+ clk_data = devm_kzalloc(dev, struct_size(clk_data, hws, count),
+ GFP_KERNEL);
+ if (!clk_data)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(mt7621_clks_base); i++)
+ clk_data->hws[i] = mt7621_clk_early[i];
+
+ ret = mt7621_register_fixed_clocks(dev, clk_data);
+ if (ret) {
+ dev_err(dev, "Couldn't register fixed clocks\n");
+ return ret;
+ }
+
+ ret = mt7621_register_gates(dev, clk_data, priv);
+ if (ret) {
+ dev_err(dev, "Couldn't register fixed clock gates\n");
+ goto unreg_clk_fixed;
+ }
+
+ clk_data->num = count;
+
+ ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, clk_data);
+ if (ret) {
+ dev_err(dev, "Couldn't add clk hw provider\n");
+ goto unreg_clk_gates;
+ }
+
+ return 0;
+
+unreg_clk_gates:
+ for (i = 0; i < ARRAY_SIZE(mt7621_gates); i++) {
+ struct mt7621_gate *sclk = &mt7621_gates[i];
+
+ clk_hw_unregister(&sclk->hw);
+ }
+
+unreg_clk_fixed:
+ for (i = 0; i < ARRAY_SIZE(mt7621_fixed_clks); i++) {
+ struct mt7621_fixed_clk *sclk = &mt7621_fixed_clks[i];
+
+ clk_hw_unregister_fixed_rate(sclk->hw);
+ }
+
+ return ret;
+}
+
+static const struct of_device_id mt7621_clk_of_match[] = {
+ { .compatible = "mediatek,mt7621-sysc" },
+ {}
+};
+
+static struct platform_driver mt7621_clk_driver = {
+ .probe = mt7621_clk_probe,
+ .driver = {
+ .name = "mt7621-clk",
+ .of_match_table = mt7621_clk_of_match,
+ },
+};
+builtin_platform_driver(mt7621_clk_driver);
diff --git a/drivers/staging/mt7621-dts/gbpc1.dts b/drivers/staging/mt7621-dts/gbpc1.dts
index a7c0d3115d7264f36b25c563a9ccee03c9923e2d..7716d0efe5240bdaa4ed5108c0605484c809dc6c 100644
--- a/drivers/staging/mt7621-dts/gbpc1.dts
+++ b/drivers/staging/mt7621-dts/gbpc1.dts
@@ -100,17 +100,6 @@ partition@50000 {
};
};
-&sysclock {
- compatible = "fixed-clock";
- /* This is normally 1/4 of cpuclock */
- clock-frequency = <225000000>;
-};
-
-&cpuclock {
- compatible = "fixed-clock";
- clock-frequency = <900000000>;
-};
-
&pcie {
pinctrl-names = "default";
pinctrl-0 = <&pcie_pins>;
diff --git a/drivers/staging/mt7621-dts/mt7621.dtsi b/drivers/staging/mt7621-dts/mt7621.dtsi
index 16fc94f6548656ef7c0adaf3e7025a4f545fadbb..f0c9ae757bcd9766fd335f218be8c9fd3ead876e 100644
--- a/drivers/staging/mt7621-dts/mt7621.dtsi
+++ b/drivers/staging/mt7621-dts/mt7621.dtsi
@@ -1,5 +1,6 @@
#include <dt-bindings/interrupt-controller/mips-gic.h>
#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clock/mt7621-clk.h>
/ {
#address-cells = <1>;
@@ -27,27 +28,6 @@ aliases {
serial0 = &uartlite;
};
- cpuclock: cpuclock@0 {
- #clock-cells = <0>;
- compatible = "fixed-clock";
-
- /* FIXME: there should be way to detect this */
- clock-frequency = <880000000>;
- };
-
- sysclock: sysclock@0 {
- #clock-cells = <0>;
- compatible = "fixed-clock";
-
- /* This is normally 1/4 of cpuclock */
- clock-frequency = <220000000>;
- };
-
- mmc_clock: mmc_clock@0 {
- #clock-cells = <0>;
- compatible = "fixed-clock";
- clock-frequency = <48000000>;
- };
mmc_fixed_3v3: fixedregulator@0 {
compatible = "regulator-fixed";
@@ -76,12 +56,17 @@ palmbus: palmbus@1E000000 {
#size-cells = <1>;
sysc: sysc@0 {
- compatible = "mtk,mt7621-sysc";
+ compatible = "mediatek,mt7621-sysc", "syscon";
reg = <0x0 0x100>;
+ #clock-cells = <1>;
+ ralink,memctl = <&memc>;
+ clock-output-names = "xtal", "cpu", "bus",
+ "50m", "125m", "150m",
+ "250m", "270m";
};
wdt: wdt@100 {
- compatible = "mtk,mt7621-wdt";
+ compatible = "mediatek,mt7621-wdt";
reg = <0x100 0x100>;
};
@@ -101,8 +86,8 @@ i2c: i2c@900 {
compatible = "mediatek,mt7621-i2c";
reg = <0x900 0x100>;
- clocks = <&sysclock>;
-
+ clocks = <&sysc MT7621_CLK_I2C>;
+ clock-names = "i2c";
resets = <&rstctrl 16>;
reset-names = "i2c";
@@ -119,8 +104,8 @@ i2s: i2s@a00 {
compatible = "mediatek,mt7621-i2s";
reg = <0xa00 0x100>;
- clocks = <&sysclock>;
-
+ clocks = <&sysc MT7621_CLK_I2S>;
+ clock-names = "i2s";
resets = <&rstctrl 17>;
reset-names = "i2s";
@@ -138,17 +123,17 @@ i2s: i2s@a00 {
};
memc: memc@5000 {
- compatible = "mtk,mt7621-memc";
+ compatible = "mediatek,mt7621-memc", "syscon";
reg = <0x5000 0x1000>;
};
cpc: cpc@1fbf0000 {
- compatible = "mtk,mt7621-cpc";
+ compatible = "mediatek,mt7621-cpc";
reg = <0x1fbf0000 0x8000>;
};
mc: mc@1fbf8000 {
- compatible = "mtk,mt7621-mc";
+ compatible = "mediatek,mt7621-mc";
reg = <0x1fbf8000 0x8000>;
};
@@ -156,8 +141,8 @@ uartlite: uartlite@c00 {
compatible = "ns16550a";
reg = <0xc00 0x100>;
- clocks = <&sysclock>;
- clock-frequency = <50000000>;
+ clocks = <&sysc MT7621_CLK_UART1>;
+ clock-names = "uart1";
interrupt-parent = <&gic>;
interrupts = <GIC_SHARED 26 IRQ_TYPE_LEVEL_HIGH>;
@@ -173,7 +158,8 @@ spi0: spi@b00 {
compatible = "ralink,mt7621-spi";
reg = <0xb00 0x100>;
- clocks = <&sysclock>;
+ clocks = <&sysc MT7621_CLK_SPI>;
+ clock-names = "spi";
resets = <&rstctrl 18>;
reset-names = "spi";
@@ -189,6 +175,8 @@ gdma: gdma@2800 {
compatible = "ralink,rt3883-gdma";
reg = <0x2800 0x800>;
+ clocks = <&sysc MT7621_CLK_GDMA>;
+ clock-names = "gdma";
resets = <&rstctrl 14>;
reset-names = "dma";
@@ -206,6 +194,8 @@ hsdma: hsdma@7000 {
compatible = "mediatek,mt7621-hsdma";
reg = <0x7000 0x1000>;
+ clocks = <&sysc MT7621_CLK_HSDMA>;
+ clock-names = "hsdma";
resets = <&rstctrl 5>;
reset-names = "hsdma";
@@ -311,11 +301,6 @@ rstctrl: rstctrl {
#reset-cells = <1>;
};
- clkctrl: clkctrl {
- compatible = "ralink,rt2880-clock";
- #clock-cells = <1>;
- };
-
sdhci: sdhci@1E130000 {
status = "disabled";
@@ -334,7 +319,8 @@ sdhci: sdhci@1E130000 {
pinctrl-0 = <&sdhci_pins>;
pinctrl-1 = <&sdhci_pins>;
- clocks = <&mmc_clock &mmc_clock>;
+ clocks = <&sysc MT7621_CLK_SHXC>,
+ <&sysc MT7621_CLK_50M>;
clock-names = "source", "hclk";
interrupt-parent = <&gic>;
@@ -349,7 +335,7 @@ xhci: xhci@1E1C0000 {
0x1e1d0700 0x0100>;
reg-names = "mac", "ippc";
- clocks = <&sysclock>;
+ clocks = <&sysc MT7621_CLK_XTAL>;
clock-names = "sys_ck";
interrupt-parent = <&gic>;
@@ -368,19 +354,22 @@ gic: interrupt-controller@1fbc0000 {
timer {
compatible = "mti,gic-timer";
interrupts = <GIC_LOCAL 1 IRQ_TYPE_NONE>;
- clocks = <&cpuclock>;
+ clocks = <&sysc MT7621_CLK_CPU>;
};
};
nand: nand@1e003000 {
status = "disabled";
- compatible = "mtk,mt7621-nand";
+ compatible = "mediatek,mt7621-nand";
bank-width = <2>;
reg = <0x1e003000 0x800
0x1e003800 0x800>;
#address-cells = <1>;
#size-cells = <1>;
+
+ clocks = <&sysc MT7621_CLK_NAND>;
+ clock-names = "nand";
};
ethsys: syscon@1e000000 {
@@ -394,8 +383,9 @@ ethernet: ethernet@1e100000 {
compatible = "mediatek,mt7621-eth";
reg = <0x1e100000 0x10000>;
- clocks = <&sysclock>;
- clock-names = "ethif";
+ clocks = <&sysc MT7621_CLK_FE>,
+ <&sysc MT7621_CLK_ETH>;
+ clock-names = "fe", "ethif";
#address-cells = <1>;
#size-cells = <0>;
@@ -521,7 +511,9 @@ GIC_SHARED 24 IRQ_TYPE_LEVEL_HIGH
resets = <&rstctrl 24 &rstctrl 25 &rstctrl 26>;
reset-names = "pcie0", "pcie1", "pcie2";
- clocks = <&clkctrl 24 &clkctrl 25 &clkctrl 26>;
+ clocks = <&sysc MT7621_CLK_PCIE0>,
+ <&sysc MT7621_CLK_PCIE1>,
+ <&sysc MT7621_CLK_PCIE2>;
clock-names = "pcie0", "pcie1", "pcie2";
phys = <&pcie0_phy 1>, <&pcie2_phy 0>;
phy-names = "pcie-phy0", "pcie-phy2";
diff --git a/include/dt-bindings/clock/mt7621-clk.h b/include/dt-bindings/clock/mt7621-clk.h
new file mode 100644
index 0000000000000000000000000000000000000000..1422badcf9deb1f82d7d40b5feebb359ba7c9272
--- /dev/null
+++ b/include/dt-bindings/clock/mt7621-clk.h
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Author: Sergio Paracuellos <sergio.paracuellos@gmail.com>
+ */
+
+#ifndef _DT_BINDINGS_CLK_MT7621_H
+#define _DT_BINDINGS_CLK_MT7621_H
+
+#define MT7621_CLK_XTAL 0
+#define MT7621_CLK_CPU 1
+#define MT7621_CLK_BUS 2
+#define MT7621_CLK_50M 3
+#define MT7621_CLK_125M 4
+#define MT7621_CLK_150M 5
+#define MT7621_CLK_250M 6
+#define MT7621_CLK_270M 7
+
+#define MT7621_CLK_HSDMA 8
+#define MT7621_CLK_FE 9
+#define MT7621_CLK_SP_DIVTX 10
+#define MT7621_CLK_TIMER 11
+#define MT7621_CLK_PCM 12
+#define MT7621_CLK_PIO 13
+#define MT7621_CLK_GDMA 14
+#define MT7621_CLK_NAND 15
+#define MT7621_CLK_I2C 16
+#define MT7621_CLK_I2S 17
+#define MT7621_CLK_SPI 18
+#define MT7621_CLK_UART1 19
+#define MT7621_CLK_UART2 20
+#define MT7621_CLK_UART3 21
+#define MT7621_CLK_ETH 22
+#define MT7621_CLK_PCIE0 23
+#define MT7621_CLK_PCIE1 24
+#define MT7621_CLK_PCIE2 25
+#define MT7621_CLK_CRYPTO 26
+#define MT7621_CLK_SHXC 27
+
+#define MT7621_CLK_MAX 28
+
+#endif /* _DT_BINDINGS_CLK_MT7621_H */