[RESEND PATCHv7 5/5] clk: socfpga: agilex: add clock driver for the Agilex platform

Dinh Nguyen
2020-05-12T18:17:09Z

For the most part the Agilex clock structure is very similar to
Stratix10, so we re-use most of the Stratix10 clock driver.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
---
v7: no changes
v6: no changes
v5: no changes
v4: no changes
v3: Address Stephen Boyd's comments
v2: update to use clk_parent_data
---
drivers/clk/Makefile | 3 +-
drivers/clk/socfpga/Makefile | 2 +
drivers/clk/socfpga/clk-agilex.c | 454 ++++++++++++++++++++++++++++
drivers/clk/socfpga/clk-pll-s10.c | 68 +++++
drivers/clk/socfpga/stratix10-clk.h | 2 +
5 files changed, 528 insertions(+), 1 deletion(-)
create mode 100644 drivers/clk/socfpga/clk-agilex.c

diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index f4169cc2fd31..a178e4b6001f 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -104,10 +104,11 @@ obj-$(CONFIG_COMMON_CLK_SAMSUNG) += samsung/
obj-$(CONFIG_CLK_SIFIVE) += sifive/
obj-$(CONFIG_ARCH_SIRF) += sirf/
obj-$(CONFIG_ARCH_SOCFPGA) += socfpga/
+obj-$(CONFIG_ARCH_AGILEX) += socfpga/
+obj-$(CONFIG_ARCH_STRATIX10) += socfpga/
obj-$(CONFIG_PLAT_SPEAR) += spear/
obj-$(CONFIG_ARCH_SPRD) += sprd/
obj-$(CONFIG_ARCH_STI) += st/
-obj-$(CONFIG_ARCH_STRATIX10) += socfpga/
obj-$(CONFIG_ARCH_SUNXI) += sunxi/
obj-$(CONFIG_SUNXI_CCU) += sunxi-ng/
obj-$(CONFIG_ARCH_TEGRA) += tegra/
diff --git a/drivers/clk/socfpga/Makefile b/drivers/clk/socfpga/Makefile
index ce5aa7802eb8..bf736f8d201a 100644
--- a/drivers/clk/socfpga/Makefile
+++ b/drivers/clk/socfpga/Makefile
@@ -3,3 +3,5 @@ obj-$(CONFIG_ARCH_SOCFPGA) += clk.o clk-gate.o clk-pll.o clk-periph.o
obj-$(CONFIG_ARCH_SOCFPGA) += clk-pll-a10.o clk-periph-a10.o clk-gate-a10.o
obj-$(CONFIG_ARCH_STRATIX10) += clk-s10.o
obj-$(CONFIG_ARCH_STRATIX10) += clk-pll-s10.o clk-periph-s10.o clk-gate-s10.o
+obj-$(CONFIG_ARCH_AGILEX) += clk-agilex.o
+obj-$(CONFIG_ARCH_AGILEX) += clk-pll-s10.o clk-periph-s10.o clk-gate-s10.o
diff --git a/drivers/clk/socfpga/clk-agilex.c b/drivers/clk/socfpga/clk-agilex.c
new file mode 100644
index 000000000000..699527f7e764
--- /dev/null
+++ b/drivers/clk/socfpga/clk-agilex.c
@@ -0,0 +1,454 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019, Intel Corporation
+ */
+#include <linux/slab.h>
+#include <linux/clk-provider.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+
+#include <dt-bindings/clock/agilex-clock.h>
+
+#include "stratix10-clk.h"
+
+static const struct clk_parent_data pll_mux[] = {
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data cntr_mux[] = {
+ { .fw_name = "main_pll",
+ .name = "main_pll", },
+ { .fw_name = "periph_pll",
+ .name = "periph_pll", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data boot_mux[] = {
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+};
+
+static const struct clk_parent_data mpu_free_mux[] = {
+ { .fw_name = "main_pll_c0",
+ .name = "main_pll_c0", },
+ { .fw_name = "peri_pll_c0",
+ .name = "peri_pll_c0", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data noc_free_mux[] = {
+ { .fw_name = "main_pll_c1",
+ .name = "main_pll_c1", },
+ { .fw_name = "peri_pll_c1",
+ .name = "peri_pll_c1", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data emaca_free_mux[] = {
+ { .fw_name = "main_pll_c2",
+ .name = "main_pll_c2", },
+ { .fw_name = "peri_pll_c2",
+ .name = "peri_pll_c2", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data emacb_free_mux[] = {
+ { .fw_name = "main_pll_c3",
+ .name = "main_pll_c3", },
+ { .fw_name = "peri_pll_c3",
+ .name = "peri_pll_c3", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data emac_ptp_free_mux[] = {
+ { .fw_name = "main_pll_c3",
+ .name = "main_pll_c3", },
+ { .fw_name = "peri_pll_c3",
+ .name = "peri_pll_c3", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data gpio_db_free_mux[] = {
+ { .fw_name = "main_pll_c3",
+ .name = "main_pll_c3", },
+ { .fw_name = "peri_pll_c3",
+ .name = "peri_pll_c3", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data psi_ref_free_mux[] = {
+ { .fw_name = "main_pll_c3",
+ .name = "main_pll_c3", },
+ { .fw_name = "peri_pll_c3",
+ .name = "peri_pll_c3", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data sdmmc_free_mux[] = {
+ { .fw_name = "main_pll_c3",
+ .name = "main_pll_c3", },
+ { .fw_name = "peri_pll_c3",
+ .name = "peri_pll_c3", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data s2f_usr0_free_mux[] = {
+ { .fw_name = "main_pll_c2",
+ .name = "main_pll_c2", },
+ { .fw_name = "peri_pll_c2",
+ .name = "peri_pll_c2", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data s2f_usr1_free_mux[] = {
+ { .fw_name = "main_pll_c2",
+ .name = "main_pll_c2", },
+ { .fw_name = "peri_pll_c2",
+ .name = "peri_pll_c2", },
+ { .fw_name = "osc1",
+ .name = "osc1", },
+ { .fw_name = "cb-intosc-hs-div2-clk",
+ .name = "cb-intosc-hs-div2-clk", },
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+};
+
+static const struct clk_parent_data mpu_mux[] = {
+ { .fw_name = "mpu_free_clk",
+ .name = "mpu_free_clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+static const struct clk_parent_data s2f_usr0_mux[] = {
+ { .fw_name = "f2s-free-clk",
+ .name = "f2s-free-clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+static const struct clk_parent_data emac_mux[] = {
+ { .fw_name = "emaca_free_clk",
+ .name = "emaca_free_clk", },
+ { .fw_name = "emacb_free_clk",
+ .name = "emacb_free_clk", },
+};
+
+static const struct clk_parent_data noc_mux[] = {
+ { .fw_name = "noc_free_clk",
+ .name = "noc_free_clk", },
+ { .fw_name = "boot_clk",
+ .name = "boot_clk", },
+};
+
+/* clocks in AO (always on) controller */
+static const struct stratix10_pll_clock agilex_pll_clks[] = {
+ { AGILEX_BOOT_CLK, "boot_clk", boot_mux, ARRAY_SIZE(boot_mux), 0,
+ 0x0},
+ { AGILEX_MAIN_PLL_CLK, "main_pll", pll_mux, ARRAY_SIZE(pll_mux),
+ 0, 0x48},
+ { AGILEX_PERIPH_PLL_CLK, "periph_pll", pll_mux, ARRAY_SIZE(pll_mux),
+ 0, 0x9c},
+};
+
+static const struct stratix10_perip_c_clock agilex_main_perip_c_clks[] = {
+ { AGILEX_MAIN_PLL_C0_CLK, "main_pll_c0", "main_pll", NULL, 1, 0, 0x58},
+ { AGILEX_MAIN_PLL_C1_CLK, "main_pll_c1", "main_pll", NULL, 1, 0, 0x5C},
+ { AGILEX_MAIN_PLL_C2_CLK, "main_pll_c2", "main_pll", NULL, 1, 0, 0x64},
+ { AGILEX_MAIN_PLL_C3_CLK, "main_pll_c3", "main_pll", NULL, 1, 0, 0x68},
+ { AGILEX_PERIPH_PLL_C0_CLK, "peri_pll_c0", "periph_pll", NULL, 1, 0, 0xAC},
+ { AGILEX_PERIPH_PLL_C1_CLK, "peri_pll_c1", "periph_pll", NULL, 1, 0, 0xB0},
+ { AGILEX_PERIPH_PLL_C2_CLK, "peri_pll_c2", "periph_pll", NULL, 1, 0, 0xB8},
+ { AGILEX_PERIPH_PLL_C3_CLK, "peri_pll_c3", "periph_pll", NULL, 1, 0, 0xBC},
+};
+
+static const struct stratix10_perip_cnt_clock agilex_main_perip_cnt_clks[] = {
+ { AGILEX_MPU_FREE_CLK, "mpu_free_clk", NULL, mpu_free_mux, ARRAY_SIZE(mpu_free_mux),
+ 0, 0x3C, 0, 0, 0},
+ { AGILEX_NOC_FREE_CLK, "noc_free_clk", NULL, noc_free_mux, ARRAY_SIZE(noc_free_mux),
+ 0, 0x40, 0, 0, 1},
+ { AGILEX_L4_SYS_FREE_CLK, "l4_sys_free_clk", "noc_free_clk", NULL, 1, 0,
+ 0, 4, 0, 0},
+ { AGILEX_NOC_CLK, "noc_clk", NULL, noc_mux, ARRAY_SIZE(noc_mux),
+ 0, 0, 0, 0x30, 1},
+ { AGILEX_EMAC_A_FREE_CLK, "emaca_free_clk", NULL, emaca_free_mux, ARRAY_SIZE(emaca_free_mux),
+ 0, 0xD4, 0, 0x88, 0},
+ { AGILEX_EMAC_B_FREE_CLK, "emacb_free_clk", NULL, emacb_free_mux, ARRAY_SIZE(emacb_free_mux),
+ 0, 0xD8, 0, 0x88, 1},
+ { AGILEX_EMAC_PTP_FREE_CLK, "emac_ptp_free_clk", NULL, emac_ptp_free_mux,
+ ARRAY_SIZE(emac_ptp_free_mux), 0, 0xDC, 0, 0x88, 2},
+ { AGILEX_GPIO_DB_FREE_CLK, "gpio_db_free_clk", NULL, gpio_db_free_mux,
+ ARRAY_SIZE(gpio_db_free_mux), 0, 0xE0, 0, 0x88, 3},
+ { AGILEX_SDMMC_FREE_CLK, "sdmmc_free_clk", NULL, sdmmc_free_mux,
+ ARRAY_SIZE(sdmmc_free_mux), 0, 0xE4, 0, 0x88, 4},
+ { AGILEX_S2F_USER0_FREE_CLK, "s2f_user0_free_clk", NULL, s2f_usr0_free_mux,
+ ARRAY_SIZE(s2f_usr0_free_mux), 0, 0xE8, 0, 0, 0},
+ { AGILEX_S2F_USER1_FREE_CLK, "s2f_user1_free_clk", NULL, s2f_usr1_free_mux,
+ ARRAY_SIZE(s2f_usr1_free_mux), 0, 0xEC, 0, 0x88, 5},
+ { AGILEX_PSI_REF_FREE_CLK, "psi_ref_free_clk", NULL, psi_ref_free_mux,
+ ARRAY_SIZE(psi_ref_free_mux), 0, 0xF0, 0, 0x88, 6},
+};
+
+static const struct stratix10_gate_clock agilex_gate_clks[] = {
+ { AGILEX_MPU_CLK, "mpu_clk", NULL, mpu_mux, ARRAY_SIZE(mpu_mux), 0, 0x24,
+ 0, 0, 0, 0, 0x30, 0, 0},
+ { AGILEX_MPU_PERIPH_CLK, "mpu_periph_clk", "mpu_clk", NULL, 1, 0, 0x24,
+ 0, 0, 0, 0, 0, 0, 4},
+ { AGILEX_MPU_L2RAM_CLK, "mpu_l2ram_clk", "mpu_clk", NULL, 1, 0, 0x24,
+ 0, 0, 0, 0, 0, 0, 2},
+ { AGILEX_L4_MAIN_CLK, "l4_main_clk", "noc_clk", NULL, 1, 0, 0x24,
+ 1, 0x44, 0, 2, 0, 0, 0},
+ { AGILEX_L4_MP_CLK, "l4_mp_clk", "noc_clk", NULL, 1, 0, 0x24,
+ 2, 0x44, 8, 2, 0, 0, 0},
+ /*
+ * The l4_sp_clk feeds a 100 MHz clock to various peripherals, one of them
+ * being the SP timers, thus cannot get gated.
+ */
+ { AGILEX_L4_SP_CLK, "l4_sp_clk", "noc_clk", NULL, 1, CLK_IS_CRITICAL, 0x24,
+ 3, 0x44, 16, 2, 0, 0, 0},
+ { AGILEX_CS_AT_CLK, "cs_at_clk", "noc_clk", NULL, 1, 0, 0x24,
+ 4, 0x44, 24, 2, 0, 0, 0},
+ { AGILEX_CS_TRACE_CLK, "cs_trace_clk", "noc_clk", NULL, 1, 0, 0x24,
+ 4, 0x44, 26, 2, 0, 0, 0},
+ { AGILEX_CS_PDBG_CLK, "cs_pdbg_clk", "cs_at_clk", NULL, 1, 0, 0x24,
+ 4, 0x44, 28, 1, 0, 0, 0},
+ { AGILEX_CS_TIMER_CLK, "cs_timer_clk", "noc_clk", NULL, 1, 0, 0x24,
+ 5, 0, 0, 0, 0, 0, 0},
+ { AGILEX_S2F_USER0_CLK, "s2f_user0_clk", NULL, s2f_usr0_mux, ARRAY_SIZE(s2f_usr0_mux), 0, 0x24,
+ 6, 0, 0, 0, 0, 0, 0},
+ { AGILEX_EMAC0_CLK, "emac0_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0x7C,
+ 0, 0, 0, 0, 0x94, 26, 0},
+ { AGILEX_EMAC1_CLK, "emac1_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0x7C,
+ 1, 0, 0, 0, 0x94, 27, 0},
+ { AGILEX_EMAC2_CLK, "emac2_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0x7C,
+ 2, 0, 0, 0, 0x94, 28, 0},
+ { AGILEX_EMAC_PTP_CLK, "emac_ptp_clk", "emac_ptp_free_clk", NULL, 1, 0, 0x7C,
+ 3, 0, 0, 0, 0, 0, 0},
+ { AGILEX_GPIO_DB_CLK, "gpio_db_clk", "gpio_db_free_clk", NULL, 1, 0, 0x7C,
+ 4, 0x98, 0, 16, 0, 0, 0},
+ { AGILEX_SDMMC_CLK, "sdmmc_clk", "sdmmc_free_clk", NULL, 1, 0, 0x7C,
+ 5, 0, 0, 0, 0, 0, 4},
+ { AGILEX_S2F_USER1_CLK, "s2f_user1_clk", "s2f_user1_free_clk", NULL, 1, 0, 0x7C,
+ 6, 0, 0, 0, 0, 0, 0},
+ { AGILEX_PSI_REF_CLK, "psi_ref_clk", "psi_ref_free_clk", NULL, 1, 0, 0x7C,
+ 7, 0, 0, 0, 0, 0, 0},
+ { AGILEX_USB_CLK, "usb_clk", "l4_mp_clk", NULL, 1, 0, 0x7C,
+ 8, 0, 0, 0, 0, 0, 0},
+ { AGILEX_SPI_M_CLK, "spi_m_clk", "l4_mp_clk", NULL, 1, 0, 0x7C,
+ 9, 0, 0, 0, 0, 0, 0},
+ { AGILEX_NAND_CLK, "nand_clk", "l4_main_clk", NULL, 1, 0, 0x7C,
+ 10, 0, 0, 0, 0, 0, 0},
+};
+
+static int agilex_clk_register_c_perip(const struct stratix10_perip_c_clock *clks,
+ int nums, struct stratix10_clock_data *data)
+{
+ struct clk *clk;
+ void __iomem *base = data->base;
+ int i;
+
+ for (i = 0; i < nums; i++) {
+ clk = s10_register_periph(&clks[i], base);
+ if (IS_ERR(clk)) {
+ pr_err("%s: failed to register clock %s\n",
+ __func__, clks[i].name);
+ continue;
+ }
+ data->clk_data.clks[clks[i].id] = clk;
+ }
+ return 0;
+}
+
+static int agilex_clk_register_cnt_perip(const struct stratix10_perip_cnt_clock *clks,
+ int nums, struct stratix10_clock_data *data)
+{
+ struct clk *clk;
+ void __iomem *base = data->base;
+ int i;
+
+ for (i = 0; i < nums; i++) {
+ clk = s10_register_cnt_periph(&clks[i], base);
+ if (IS_ERR(clk)) {
+ pr_err("%s: failed to register clock %s\n",
+ __func__, clks[i].name);
+ continue;
+ }
+ data->clk_data.clks[clks[i].id] = clk;
+ }
+
+ return 0;
+}
+
+static int agilex_clk_register_gate(const struct stratix10_gate_clock *clks, int nums, struct stratix10_clock_data *data)
+{
+ struct clk *clk;
+ void __iomem *base = data->base;
+ int i;
+
+ for (i = 0; i < nums; i++) {
+ clk = s10_register_gate(&clks[i], base);
+ if (IS_ERR(clk)) {
+ pr_err("%s: failed to register clock %s\n",
+ __func__, clks[i].name);
+ continue;
+ }
+ data->clk_data.clks[clks[i].id] = clk;
+ }
+
+ return 0;
+}
+
+static int agilex_clk_register_pll(const struct stratix10_pll_clock *clks,
+ int nums, struct stratix10_clock_data *data)
+{
+ struct clk *clk;
+ void __iomem *base = data->base;
+ int i;
+
+ for (i = 0; i < nums; i++) {
+ clk = agilex_register_pll(&clks[i], base);
+ if (IS_ERR(clk)) {
+ pr_err("%s: failed to register clock %s\n",
+ __func__, clks[i].name);
+ continue;
+ }
+ data->clk_data.clks[clks[i].id] = clk;
+ }
+
+ return 0;
+}
+
+static struct stratix10_clock_data *__socfpga_agilex_clk_init(struct platform_device *pdev,
+ int nr_clks)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct device *dev = &pdev->dev;
+ struct stratix10_clock_data *clk_data;
+ struct clk **clk_table;
+ struct resource *res;
+ void __iomem *base;
+ int ret;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(base))
+ return ERR_CAST(base);
+
+ clk_data = devm_kzalloc(dev, sizeof(*clk_data), GFP_KERNEL);
+ if (!clk_data)
+ return ERR_PTR(-ENOMEM);
+
+ clk_data->base = base;
+ clk_table = devm_kcalloc(dev, nr_clks, sizeof(*clk_table), GFP_KERNEL);
+ if (!clk_table)
+ return ERR_PTR(-ENOMEM);
+
+ clk_data->clk_data.clks = clk_table;
+ clk_data->clk_data.clk_num = nr_clks;
+ ret = of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data->clk_data);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return clk_data;
+}
+
+static int agilex_clkmgr_probe(struct platform_device *pdev)
+{
+ struct stratix10_clock_data *clk_data;
+
+ clk_data = __socfpga_agilex_clk_init(pdev, AGILEX_NUM_CLKS);
+ if (IS_ERR(clk_data))
+ return PTR_ERR(clk_data);
+
+ agilex_clk_register_pll(agilex_pll_clks, ARRAY_SIZE(agilex_pll_clks), clk_data);
+
+ agilex_clk_register_c_perip(agilex_main_perip_c_clks,
+ ARRAY_SIZE(agilex_main_perip_c_clks), clk_data);
+
+ agilex_clk_register_cnt_perip(agilex_main_perip_cnt_clks,
+ ARRAY_SIZE(agilex_main_perip_cnt_clks),
+ clk_data);
+
+ agilex_clk_register_gate(agilex_gate_clks, ARRAY_SIZE(agilex_gate_clks),
+ clk_data);
+ return 0;
+}
+
+static const struct of_device_id agilex_clkmgr_match_table[] = {
+ { .compatible = "intel,agilex-clkmgr",
+ .data = agilex_clkmgr_probe },
+ { }
+};
+
+static struct platform_driver agilex_clkmgr_driver = {
+ .probe = agilex_clkmgr_probe,
+ .driver = {
+ .name = "agilex-clkmgr",
+ .suppress_bind_attrs = true,
+ .of_match_table = agilex_clkmgr_match_table,
+ },
+};
+
+static int __init agilex_clk_init(void)
+{
+ return platform_driver_register(&agilex_clkmgr_driver);
+}
+core_initcall(agilex_clk_init);
diff --git a/drivers/clk/socfpga/clk-pll-s10.c b/drivers/clk/socfpga/clk-pll-s10.c
index 5c3e1ee44f6b..4e268953b7da 100644
--- a/drivers/clk/socfpga/clk-pll-s10.c
+++ b/drivers/clk/socfpga/clk-pll-s10.c
@@ -18,8 +18,12 @@
#define SOCFPGA_PLL_RESET_MASK 0x2
#define SOCFPGA_PLL_REFDIV_MASK 0x00003F00
#define SOCFPGA_PLL_REFDIV_SHIFT 8
+#define SOCFPGA_PLL_AREFDIV_MASK 0x00000F00
+#define SOCFPGA_PLL_DREFDIV_MASK 0x00003000
+#define SOCFPGA_PLL_DREFDIV_SHIFT 12
#define SOCFPGA_PLL_MDIV_MASK 0xFF000000
#define SOCFPGA_PLL_MDIV_SHIFT 24
+#define SOCFPGA_AGILEX_PLL_MDIV_MASK 0x000003FF
#define SWCTRLBTCLKSEL_MASK 0x200
#define SWCTRLBTCLKSEL_SHIFT 9

@@ -27,6 +31,27 @@

#define to_socfpga_clk(p) container_of(p, struct socfpga_pll, hw.hw)

+static unsigned long agilex_clk_pll_recalc_rate(struct clk_hw *hwclk,
+ unsigned long parent_rate)
+{
+ struct socfpga_pll *socfpgaclk = to_socfpga_clk(hwclk);
+ unsigned long arefdiv, reg, mdiv;
+ unsigned long long vco_freq;
+
+ /* read VCO1 reg for numerator and denominator */
+ reg = readl(socfpgaclk->hw.reg);
+ arefdiv = (reg & SOCFPGA_PLL_AREFDIV_MASK) >> SOCFPGA_PLL_REFDIV_SHIFT;
+
+ vco_freq = (unsigned long long)parent_rate / arefdiv;
+
+ /* Read mdiv and fdiv from the fdbck register */
+ reg = readl(socfpgaclk->hw.reg + 0x24);
+ mdiv = reg & SOCFPGA_AGILEX_PLL_MDIV_MASK;
+
+ vco_freq = (unsigned long long)vco_freq * mdiv;
+ return (unsigned long)vco_freq;
+}
+
static unsigned long clk_pll_recalc_rate(struct clk_hw *hwclk,
unsigned long parent_rate)
{
@@ -98,6 +123,12 @@ static int clk_pll_prepare(struct clk_hw *hwclk)
return 0;
}

+static const struct clk_ops agilex_clk_pll_ops = {
+ .recalc_rate = agilex_clk_pll_recalc_rate,
+ .get_parent = clk_pll_get_parent,
+ .prepare = clk_pll_prepare,
+};
+
static const struct clk_ops clk_pll_ops = {
.recalc_rate = clk_pll_recalc_rate,
.get_parent = clk_pll_get_parent,
@@ -146,3 +177,40 @@ struct clk *s10_register_pll(const struct stratix10_pll_clock *clks,
}
return clk;
}
+
+struct clk *agilex_register_pll(const struct stratix10_pll_clock *clks,
+ void __iomem *reg)
+{
+ struct clk *clk;
+ struct socfpga_pll *pll_clk;
+ struct clk_init_data init;
+ const char *name = clks->name;
+
+ pll_clk = kzalloc(sizeof(*pll_clk), GFP_KERNEL);
+ if (WARN_ON(!pll_clk))
+ return NULL;
+
+ pll_clk->hw.reg = reg + clks->offset;
+
+ if (streq(name, SOCFPGA_BOOT_CLK))
+ init.ops = &clk_boot_ops;
+ else
+ init.ops = &agilex_clk_pll_ops;
+
+ init.name = name;
+ init.flags = clks->flags;
+
+ init.num_parents = clks->num_parents;
+ init.parent_names = NULL;
+ init.parent_data = clks->parent_data;
+ pll_clk->hw.hw.init = &init;
+
+ pll_clk->hw.bit_idx = SOCFPGA_PLL_POWER;
+
+ clk = clk_register(NULL, &pll_clk->hw.hw);
+ if (WARN_ON(IS_ERR(clk))) {
+ kfree(pll_clk);
+ return NULL;
+ }
+ return clk;
+}
diff --git a/drivers/clk/socfpga/stratix10-clk.h b/drivers/clk/socfpga/stratix10-clk.h
index ffbd1fb2c8ef..f9d5d724c694 100644
--- a/drivers/clk/socfpga/stratix10-clk.h
+++ b/drivers/clk/socfpga/stratix10-clk.h
@@ -62,6 +62,8 @@ struct stratix10_gate_clock {

struct clk *s10_register_pll(const struct stratix10_pll_clock *,
void __iomem *);
+struct clk *agilex_register_pll(const struct stratix10_pll_clock *,
+ void __iomem *);
struct clk *s10_register_periph(const struct stratix10_perip_c_clock *,
void __iomem *);
struct clk *s10_register_cnt_periph(const struct stratix10_perip_cnt_clock *,
--
2.17.1