summaryrefslogtreecommitdiff
path: root/drivers/clk/altera/clk-agilex.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/clk/altera/clk-agilex.c')
-rw-r--r--drivers/clk/altera/clk-agilex.c579
1 files changed, 579 insertions, 0 deletions
diff --git a/drivers/clk/altera/clk-agilex.c b/drivers/clk/altera/clk-agilex.c
new file mode 100644
index 0000000000..5fedec549d
--- /dev/null
+++ b/drivers/clk/altera/clk-agilex.c
@@ -0,0 +1,579 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Intel Corporation <www.intel.com>
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <clk-uclass.h>
+#include <dm.h>
+#include <dm/lists.h>
+#include <dm/util.h>
+#include <dt-bindings/clock/agilex-clock.h>
+
+#include <asm/arch/clock_manager.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct socfpga_clk_platdata {
+ void __iomem *regs;
+};
+
+/*
+ * function to write the bypass register which requires a poll of the
+ * busy bit
+ */
+static void clk_write_bypass_mainpll(struct socfpga_clk_platdata *plat, u32 val)
+{
+ CM_REG_WRITEL(plat, val, CLKMGR_MAINPLL_BYPASS);
+ cm_wait_for_fsm();
+}
+
+static void clk_write_bypass_perpll(struct socfpga_clk_platdata *plat, u32 val)
+{
+ CM_REG_WRITEL(plat, val, CLKMGR_PERPLL_BYPASS);
+ cm_wait_for_fsm();
+}
+
+/* function to write the ctrl register which requires a poll of the busy bit */
+static void clk_write_ctrl(struct socfpga_clk_platdata *plat, u32 val)
+{
+ CM_REG_WRITEL(plat, val, CLKMGR_CTRL);
+ cm_wait_for_fsm();
+}
+
+#define MEMBUS_MAINPLL 0
+#define MEMBUS_PERPLL 1
+#define MEMBUS_TIMEOUT 1000
+#define MEMBUS_ADDR_CLKSLICE 0x27
+#define MEMBUS_CLKSLICE_SYNC_MODE_EN 0x80
+
+static int membus_wait_for_req(struct socfpga_clk_platdata *plat, u32 pll,
+ int timeout)
+{
+ int cnt = 0;
+ u32 req_status;
+
+ if (pll == MEMBUS_MAINPLL)
+ req_status = CM_REG_READL(plat, CLKMGR_MAINPLL_MEM);
+ else
+ req_status = CM_REG_READL(plat, CLKMGR_PERPLL_MEM);
+
+ while ((cnt < timeout) && (req_status & CLKMGR_MEM_REQ_SET_MSK)) {
+ if (pll == MEMBUS_MAINPLL)
+ req_status = CM_REG_READL(plat, CLKMGR_MAINPLL_MEM);
+ else
+ req_status = CM_REG_READL(plat, CLKMGR_PERPLL_MEM);
+ cnt++;
+ }
+
+ if (cnt >= timeout)
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
+static int membus_write_pll(struct socfpga_clk_platdata *plat, u32 pll,
+ u32 addr_offset, u32 wdat, int timeout)
+{
+ u32 addr;
+ u32 val;
+
+ addr = ((addr_offset | CLKMGR_MEM_ADDR_START) & CLKMGR_MEM_ADDR_MASK);
+
+ val = (CLKMGR_MEM_REQ_SET_MSK | CLKMGR_MEM_WR_SET_MSK |
+ (wdat << CLKMGR_MEM_WDAT_LSB_OFFSET) | addr);
+
+ if (pll == MEMBUS_MAINPLL)
+ CM_REG_WRITEL(plat, val, CLKMGR_MAINPLL_MEM);
+ else
+ CM_REG_WRITEL(plat, val, CLKMGR_PERPLL_MEM);
+
+ debug("MEMBUS: Write 0x%08x to addr = 0x%08x\n", wdat, addr);
+
+ return membus_wait_for_req(plat, pll, timeout);
+}
+
+static int membus_read_pll(struct socfpga_clk_platdata *plat, u32 pll,
+ u32 addr_offset, u32 *rdata, int timeout)
+{
+ u32 addr;
+ u32 val;
+
+ addr = ((addr_offset | CLKMGR_MEM_ADDR_START) & CLKMGR_MEM_ADDR_MASK);
+
+ val = ((CLKMGR_MEM_REQ_SET_MSK & ~CLKMGR_MEM_WR_SET_MSK) | addr);
+
+ if (pll == MEMBUS_MAINPLL)
+ CM_REG_WRITEL(plat, val, CLKMGR_MAINPLL_MEM);
+ else
+ CM_REG_WRITEL(plat, val, CLKMGR_PERPLL_MEM);
+
+ *rdata = 0;
+
+ if (membus_wait_for_req(plat, pll, timeout))
+ return -ETIMEDOUT;
+
+ if (pll == MEMBUS_MAINPLL)
+ *rdata = CM_REG_READL(plat, CLKMGR_MAINPLL_MEMSTAT);
+ else
+ *rdata = CM_REG_READL(plat, CLKMGR_PERPLL_MEMSTAT);
+
+ debug("MEMBUS: Read 0x%08x from addr = 0x%08x\n", *rdata, addr);
+
+ return 0;
+}
+
+static u32 calc_vocalib_pll(u32 pllm, u32 pllglob)
+{
+ u32 mdiv, refclkdiv, arefclkdiv, drefclkdiv, mscnt, hscnt, vcocalib;
+
+ mdiv = pllm & CLKMGR_PLLM_MDIV_MASK;
+ arefclkdiv = (pllglob & CLKMGR_PLLGLOB_AREFCLKDIV_MASK) >>
+ CLKMGR_PLLGLOB_AREFCLKDIV_OFFSET;
+ drefclkdiv = (pllglob & CLKMGR_PLLGLOB_DREFCLKDIV_MASK) >>
+ CLKMGR_PLLGLOB_DREFCLKDIV_OFFSET;
+ refclkdiv = (pllglob & CLKMGR_PLLGLOB_REFCLKDIV_MASK) >>
+ CLKMGR_PLLGLOB_REFCLKDIV_OFFSET;
+ mscnt = CLKMGR_VCOCALIB_MSCNT_CONST / (mdiv * BIT(drefclkdiv));
+ if (!mscnt)
+ mscnt = 1;
+ hscnt = (mdiv * mscnt * BIT(drefclkdiv) / refclkdiv) -
+ CLKMGR_VCOCALIB_HSCNT_CONST;
+ vcocalib = (hscnt & CLKMGR_VCOCALIB_HSCNT_MASK) |
+ ((mscnt << CLKMGR_VCOCALIB_MSCNT_OFFSET) &
+ CLKMGR_VCOCALIB_MSCNT_MASK);
+
+ /* Dump all the pll calibration settings for debug purposes */
+ debug("mdiv : %d\n", mdiv);
+ debug("arefclkdiv : %d\n", arefclkdiv);
+ debug("drefclkdiv : %d\n", drefclkdiv);
+ debug("refclkdiv : %d\n", refclkdiv);
+ debug("mscnt : %d\n", mscnt);
+ debug("hscnt : %d\n", hscnt);
+ debug("vcocalib : 0x%08x\n", vcocalib);
+
+ return vcocalib;
+}
+
+/*
+ * Setup clocks while making no assumptions about previous state of the clocks.
+ */
+static void clk_basic_init(struct udevice *dev,
+ const struct cm_config * const cfg)
+{
+ struct socfpga_clk_platdata *plat = dev_get_platdata(dev);
+ u32 vcocalib;
+ u32 rdata;
+
+ if (!cfg)
+ return;
+
+ /* Put both PLLs in bypass */
+ clk_write_bypass_mainpll(plat, CLKMGR_BYPASS_MAINPLL_ALL);
+ clk_write_bypass_perpll(plat, CLKMGR_BYPASS_PERPLL_ALL);
+
+ /* Put both PLLs in Reset and Power Down */
+ CM_REG_CLRBITS(plat, CLKMGR_MAINPLL_PLLGLOB,
+ CLKMGR_PLLGLOB_PD_MASK | CLKMGR_PLLGLOB_RST_MASK);
+ CM_REG_CLRBITS(plat, CLKMGR_PERPLL_PLLGLOB,
+ CLKMGR_PLLGLOB_PD_MASK | CLKMGR_PLLGLOB_RST_MASK);
+
+ /* setup main PLL dividers where calculate the vcocalib value */
+ vcocalib = calc_vocalib_pll(cfg->main_pll_pllm, cfg->main_pll_pllglob);
+ CM_REG_WRITEL(plat, cfg->main_pll_pllglob & ~CLKMGR_PLLGLOB_RST_MASK,
+ CLKMGR_MAINPLL_PLLGLOB);
+ CM_REG_WRITEL(plat, cfg->main_pll_fdbck, CLKMGR_MAINPLL_FDBCK);
+ CM_REG_WRITEL(plat, vcocalib, CLKMGR_MAINPLL_VCOCALIB);
+ CM_REG_WRITEL(plat, cfg->main_pll_pllc0, CLKMGR_MAINPLL_PLLC0);
+ CM_REG_WRITEL(plat, cfg->main_pll_pllc1, CLKMGR_MAINPLL_PLLC1);
+ CM_REG_WRITEL(plat, cfg->main_pll_pllc2, CLKMGR_MAINPLL_PLLC2);
+ CM_REG_WRITEL(plat, cfg->main_pll_pllc3, CLKMGR_MAINPLL_PLLC3);
+ CM_REG_WRITEL(plat, cfg->main_pll_pllm, CLKMGR_MAINPLL_PLLM);
+ CM_REG_WRITEL(plat, cfg->main_pll_mpuclk, CLKMGR_MAINPLL_MPUCLK);
+ CM_REG_WRITEL(plat, cfg->main_pll_nocclk, CLKMGR_MAINPLL_NOCCLK);
+ CM_REG_WRITEL(plat, cfg->main_pll_nocdiv, CLKMGR_MAINPLL_NOCDIV);
+
+ /* setup peripheral PLL dividers where calculate the vcocalib value */
+ vcocalib = calc_vocalib_pll(cfg->per_pll_pllm, cfg->per_pll_pllglob);
+ CM_REG_WRITEL(plat, cfg->per_pll_pllglob & ~CLKMGR_PLLGLOB_RST_MASK,
+ CLKMGR_PERPLL_PLLGLOB);
+ CM_REG_WRITEL(plat, cfg->per_pll_fdbck, CLKMGR_PERPLL_FDBCK);
+ CM_REG_WRITEL(plat, vcocalib, CLKMGR_PERPLL_VCOCALIB);
+ CM_REG_WRITEL(plat, cfg->per_pll_pllc0, CLKMGR_PERPLL_PLLC0);
+ CM_REG_WRITEL(plat, cfg->per_pll_pllc1, CLKMGR_PERPLL_PLLC1);
+ CM_REG_WRITEL(plat, cfg->per_pll_pllc2, CLKMGR_PERPLL_PLLC2);
+ CM_REG_WRITEL(plat, cfg->per_pll_pllc3, CLKMGR_PERPLL_PLLC3);
+ CM_REG_WRITEL(plat, cfg->per_pll_pllm, CLKMGR_PERPLL_PLLM);
+ CM_REG_WRITEL(plat, cfg->per_pll_emacctl, CLKMGR_PERPLL_EMACCTL);
+ CM_REG_WRITEL(plat, cfg->per_pll_gpiodiv, CLKMGR_PERPLL_GPIODIV);
+
+ /* Take both PLL out of reset and power up */
+ CM_REG_SETBITS(plat, CLKMGR_MAINPLL_PLLGLOB,
+ CLKMGR_PLLGLOB_PD_MASK | CLKMGR_PLLGLOB_RST_MASK);
+ CM_REG_SETBITS(plat, CLKMGR_PERPLL_PLLGLOB,
+ CLKMGR_PLLGLOB_PD_MASK | CLKMGR_PLLGLOB_RST_MASK);
+
+ /* Membus programming to set mainpll and perripll to
+ * source synchronous mode
+ */
+ membus_read_pll(plat, MEMBUS_MAINPLL, MEMBUS_ADDR_CLKSLICE, &rdata,
+ MEMBUS_TIMEOUT);
+ membus_write_pll(plat, MEMBUS_MAINPLL, MEMBUS_ADDR_CLKSLICE,
+ (rdata | MEMBUS_CLKSLICE_SYNC_MODE_EN),
+ MEMBUS_TIMEOUT);
+ membus_read_pll(plat, MEMBUS_PERPLL, MEMBUS_ADDR_CLKSLICE, &rdata,
+ MEMBUS_TIMEOUT);
+ membus_write_pll(plat, MEMBUS_PERPLL, MEMBUS_ADDR_CLKSLICE,
+ (rdata | MEMBUS_CLKSLICE_SYNC_MODE_EN),
+ MEMBUS_TIMEOUT);
+
+ cm_wait_for_lock(CLKMGR_STAT_ALLPLL_LOCKED_MASK);
+
+ /* Configure ping pong counters in altera group */
+ CM_REG_WRITEL(plat, cfg->alt_emacactr, CLKMGR_ALTR_EMACACTR);
+ CM_REG_WRITEL(plat, cfg->alt_emacbctr, CLKMGR_ALTR_EMACBCTR);
+ CM_REG_WRITEL(plat, cfg->alt_emacptpctr, CLKMGR_ALTR_EMACPTPCTR);
+ CM_REG_WRITEL(plat, cfg->alt_gpiodbctr, CLKMGR_ALTR_GPIODBCTR);
+ CM_REG_WRITEL(plat, cfg->alt_sdmmcctr, CLKMGR_ALTR_SDMMCCTR);
+ CM_REG_WRITEL(plat, cfg->alt_s2fuser0ctr, CLKMGR_ALTR_S2FUSER0CTR);
+ CM_REG_WRITEL(plat, cfg->alt_s2fuser1ctr, CLKMGR_ALTR_S2FUSER1CTR);
+ CM_REG_WRITEL(plat, cfg->alt_psirefctr, CLKMGR_ALTR_PSIREFCTR);
+
+ CM_REG_WRITEL(plat, CLKMGR_LOSTLOCK_SET_MASK, CLKMGR_MAINPLL_LOSTLOCK);
+ CM_REG_WRITEL(plat, CLKMGR_LOSTLOCK_SET_MASK, CLKMGR_PERPLL_LOSTLOCK);
+
+ CM_REG_WRITEL(plat, CM_REG_READL(plat, CLKMGR_MAINPLL_PLLGLOB) |
+ CLKMGR_PLLGLOB_CLR_LOSTLOCK_BYPASS_MASK,
+ CLKMGR_MAINPLL_PLLGLOB);
+ CM_REG_WRITEL(plat, CM_REG_READL(plat, CLKMGR_PERPLL_PLLGLOB) |
+ CLKMGR_PLLGLOB_CLR_LOSTLOCK_BYPASS_MASK,
+ CLKMGR_PERPLL_PLLGLOB);
+
+ /* Take all PLLs out of bypass */
+ clk_write_bypass_mainpll(plat, 0);
+ clk_write_bypass_perpll(plat, 0);
+
+ /* Clear the loss of lock bits (write 1 to clear) */
+ CM_REG_CLRBITS(plat, CLKMGR_INTRCLR,
+ CLKMGR_INTER_PERPLLLOST_MASK |
+ CLKMGR_INTER_MAINPLLLOST_MASK);
+
+ /* Take all ping pong counters out of reset */
+ CM_REG_CLRBITS(plat, CLKMGR_ALTR_EXTCNTRST,
+ CLKMGR_ALT_EXTCNTRST_ALLCNTRST);
+
+ /* Out of boot mode */
+ clk_write_ctrl(plat,
+ CM_REG_READL(plat, CLKMGR_CTRL) & ~CLKMGR_CTRL_BOOTMODE);
+}
+
+static u64 clk_get_vco_clk_hz(struct socfpga_clk_platdata *plat,
+ u32 pllglob_reg, u32 pllm_reg)
+{
+ u64 fref, arefdiv, mdiv, reg, vco;
+
+ reg = CM_REG_READL(plat, pllglob_reg);
+
+ fref = (reg & CLKMGR_PLLGLOB_VCO_PSRC_MASK) >>
+ CLKMGR_PLLGLOB_VCO_PSRC_OFFSET;
+
+ switch (fref) {
+ case CLKMGR_VCO_PSRC_EOSC1:
+ fref = cm_get_osc_clk_hz();
+ break;
+ case CLKMGR_VCO_PSRC_INTOSC:
+ fref = cm_get_intosc_clk_hz();
+ break;
+ case CLKMGR_VCO_PSRC_F2S:
+ fref = cm_get_fpga_clk_hz();
+ break;
+ }
+
+ arefdiv = (reg & CLKMGR_PLLGLOB_AREFCLKDIV_MASK) >>
+ CLKMGR_PLLGLOB_AREFCLKDIV_OFFSET;
+
+ mdiv = CM_REG_READL(plat, pllm_reg) & CLKMGR_PLLM_MDIV_MASK;
+
+ vco = fref / arefdiv;
+ vco = vco * mdiv;
+
+ return vco;
+}
+
+static u64 clk_get_main_vco_clk_hz(struct socfpga_clk_platdata *plat)
+{
+ return clk_get_vco_clk_hz(plat, CLKMGR_MAINPLL_PLLGLOB,
+ CLKMGR_MAINPLL_PLLM);
+}
+
+static u64 clk_get_per_vco_clk_hz(struct socfpga_clk_platdata *plat)
+{
+ return clk_get_vco_clk_hz(plat, CLKMGR_PERPLL_PLLGLOB,
+ CLKMGR_PERPLL_PLLM);
+}
+
+static u32 clk_get_5_1_clk_src(struct socfpga_clk_platdata *plat, u64 reg)
+{
+ u32 clksrc = CM_REG_READL(plat, reg);
+
+ return (clksrc & CLKMGR_CLKSRC_MASK) >> CLKMGR_CLKSRC_OFFSET;
+}
+
+static u64 clk_get_clksrc_hz(struct socfpga_clk_platdata *plat, u32 clksrc_reg,
+ u32 main_reg, u32 per_reg)
+{
+ u64 clock;
+ u32 clklsrc = clk_get_5_1_clk_src(plat, clksrc_reg);
+
+ switch (clklsrc) {
+ case CLKMGR_CLKSRC_MAIN:
+ clock = clk_get_main_vco_clk_hz(plat);
+ clock /= (CM_REG_READL(plat, main_reg) &
+ CLKMGR_CLKCNT_MSK);
+ break;
+
+ case CLKMGR_CLKSRC_PER:
+ clock = clk_get_per_vco_clk_hz(plat);
+ clock /= (CM_REG_READL(plat, per_reg) &
+ CLKMGR_CLKCNT_MSK);
+ break;
+
+ case CLKMGR_CLKSRC_OSC1:
+ clock = cm_get_osc_clk_hz();
+ break;
+
+ case CLKMGR_CLKSRC_INTOSC:
+ clock = cm_get_intosc_clk_hz();
+ break;
+
+ case CLKMGR_CLKSRC_FPGA:
+ clock = cm_get_fpga_clk_hz();
+ break;
+ default:
+ return 0;
+ }
+
+ return clock;
+}
+
+static u64 clk_get_mpu_clk_hz(struct socfpga_clk_platdata *plat)
+{
+ u64 clock = clk_get_clksrc_hz(plat, CLKMGR_MAINPLL_MPUCLK,
+ CLKMGR_MAINPLL_PLLC0,
+ CLKMGR_PERPLL_PLLC0);
+
+ clock /= 1 + (CM_REG_READL(plat, CLKMGR_MAINPLL_MPUCLK) &
+ CLKMGR_CLKCNT_MSK);
+
+ return clock;
+}
+
+static u32 clk_get_l3_main_clk_hz(struct socfpga_clk_platdata *plat)
+{
+ return clk_get_clksrc_hz(plat, CLKMGR_MAINPLL_NOCCLK,
+ CLKMGR_MAINPLL_PLLC1,
+ CLKMGR_PERPLL_PLLC1);
+}
+
+static u32 clk_get_l4_main_clk_hz(struct socfpga_clk_platdata *plat)
+{
+ u64 clock = clk_get_l3_main_clk_hz(plat);
+
+ clock /= BIT((CM_REG_READL(plat, CLKMGR_MAINPLL_NOCDIV) >>
+ CLKMGR_NOCDIV_L4MAIN_OFFSET) &
+ CLKMGR_NOCDIV_DIVIDER_MASK);
+
+ return clock;
+}
+
+static u32 clk_get_sdmmc_clk_hz(struct socfpga_clk_platdata *plat)
+{
+ u64 clock = clk_get_clksrc_hz(plat, CLKMGR_ALTR_SDMMCCTR,
+ CLKMGR_MAINPLL_PLLC3,
+ CLKMGR_PERPLL_PLLC3);
+
+ clock /= 1 + (CM_REG_READL(plat, CLKMGR_ALTR_SDMMCCTR) &
+ CLKMGR_CLKCNT_MSK);
+
+ return clock / 4;
+}
+
+static u32 clk_get_l4_sp_clk_hz(struct socfpga_clk_platdata *plat)
+{
+ u64 clock = clk_get_l3_main_clk_hz(plat);
+
+ clock /= BIT((CM_REG_READL(plat, CLKMGR_MAINPLL_NOCDIV) >>
+ CLKMGR_NOCDIV_L4SPCLK_OFFSET) &
+ CLKMGR_NOCDIV_DIVIDER_MASK);
+
+ return clock;
+}
+
+static u32 clk_get_l4_mp_clk_hz(struct socfpga_clk_platdata *plat)
+{
+ u64 clock = clk_get_l3_main_clk_hz(plat);
+
+ clock /= BIT((CM_REG_READL(plat, CLKMGR_MAINPLL_NOCDIV) >>
+ CLKMGR_NOCDIV_L4MPCLK_OFFSET) &
+ CLKMGR_NOCDIV_DIVIDER_MASK);
+
+ return clock;
+}
+
+static u32 clk_get_l4_sys_free_clk_hz(struct socfpga_clk_platdata *plat)
+{
+ if (CM_REG_READL(plat, CLKMGR_STAT) & CLKMGR_STAT_BOOTMODE)
+ return clk_get_l3_main_clk_hz(plat) / 2;
+
+ return clk_get_l3_main_clk_hz(plat) / 4;
+}
+
+static u32 clk_get_emac_clk_hz(struct socfpga_clk_platdata *plat, u32 emac_id)
+{
+ bool emacsel_a;
+ u32 ctl;
+ u32 ctr_reg;
+ u32 clock;
+ u32 div;
+ u32 reg;
+
+ /* Get EMAC clock source */
+ ctl = CM_REG_READL(plat, CLKMGR_PERPLL_EMACCTL);
+ if (emac_id == AGILEX_EMAC0_CLK)
+ ctl = (ctl >> CLKMGR_PERPLLGRP_EMACCTL_EMAC0SELB_OFFSET) &
+ CLKMGR_PERPLLGRP_EMACCTL_EMAC0SELB_MASK;
+ else if (emac_id == AGILEX_EMAC1_CLK)
+ ctl = (ctl >> CLKMGR_PERPLLGRP_EMACCTL_EMAC1SELB_OFFSET) &
+ CLKMGR_PERPLLGRP_EMACCTL_EMAC1SELB_MASK;
+ else if (emac_id == AGILEX_EMAC2_CLK)
+ ctl = (ctl >> CLKMGR_PERPLLGRP_EMACCTL_EMAC2SELB_OFFSET) &
+ CLKMGR_PERPLLGRP_EMACCTL_EMAC2SELB_MASK;
+ else
+ return 0;
+
+ if (ctl) {
+ /* EMAC B source */
+ emacsel_a = false;
+ ctr_reg = CLKMGR_ALTR_EMACBCTR;
+ } else {
+ /* EMAC A source */
+ emacsel_a = true;
+ ctr_reg = CLKMGR_ALTR_EMACACTR;
+ }
+
+ reg = CM_REG_READL(plat, ctr_reg);
+ clock = (reg & CLKMGR_ALT_EMACCTR_SRC_MASK)
+ >> CLKMGR_ALT_EMACCTR_SRC_OFFSET;
+ div = (reg & CLKMGR_ALT_EMACCTR_CNT_MASK)
+ >> CLKMGR_ALT_EMACCTR_CNT_OFFSET;
+
+ switch (clock) {
+ case CLKMGR_CLKSRC_MAIN:
+ clock = clk_get_main_vco_clk_hz(plat);
+ if (emacsel_a) {
+ clock /= (CM_REG_READL(plat, CLKMGR_MAINPLL_PLLC2) &
+ CLKMGR_CLKCNT_MSK);
+ } else {
+ clock /= (CM_REG_READL(plat, CLKMGR_MAINPLL_PLLC3) &
+ CLKMGR_CLKCNT_MSK);
+ }
+ break;
+
+ case CLKMGR_CLKSRC_PER:
+ clock = clk_get_per_vco_clk_hz(plat);
+ if (emacsel_a) {
+ clock /= (CM_REG_READL(plat, CLKMGR_PERPLL_PLLC2) &
+ CLKMGR_CLKCNT_MSK);
+ } else {
+ clock /= (CM_REG_READL(plat, CLKMGR_PERPLL_PLLC3) &
+ CLKMGR_CLKCNT_MSK);
+ }
+ break;
+
+ case CLKMGR_CLKSRC_OSC1:
+ clock = cm_get_osc_clk_hz();
+ break;
+
+ case CLKMGR_CLKSRC_INTOSC:
+ clock = cm_get_intosc_clk_hz();
+ break;
+
+ case CLKMGR_CLKSRC_FPGA:
+ clock = cm_get_fpga_clk_hz();
+ break;
+ }
+
+ clock /= 1 + div;
+
+ return clock;
+}
+
+static ulong socfpga_clk_get_rate(struct clk *clk)
+{
+ struct socfpga_clk_platdata *plat = dev_get_platdata(clk->dev);
+
+ switch (clk->id) {
+ case AGILEX_MPU_CLK:
+ return clk_get_mpu_clk_hz(plat);
+ case AGILEX_L4_MAIN_CLK:
+ return clk_get_l4_main_clk_hz(plat);
+ case AGILEX_L4_SYS_FREE_CLK:
+ return clk_get_l4_sys_free_clk_hz(plat);
+ case AGILEX_L4_MP_CLK:
+ return clk_get_l4_mp_clk_hz(plat);
+ case AGILEX_L4_SP_CLK:
+ return clk_get_l4_sp_clk_hz(plat);
+ case AGILEX_SDMMC_CLK:
+ return clk_get_sdmmc_clk_hz(plat);
+ case AGILEX_EMAC0_CLK:
+ case AGILEX_EMAC1_CLK:
+ case AGILEX_EMAC2_CLK:
+ return clk_get_emac_clk_hz(plat, clk->id);
+ case AGILEX_USB_CLK:
+ return clk_get_l4_mp_clk_hz(plat);
+ default:
+ return -ENXIO;
+ }
+}
+
+static int socfpga_clk_probe(struct udevice *dev)
+{
+ const struct cm_config *cm_default_cfg = cm_get_default_config();
+
+ clk_basic_init(dev, cm_default_cfg);
+
+ return 0;
+}
+
+static int socfpga_clk_ofdata_to_platdata(struct udevice *dev)
+{
+ struct socfpga_clk_platdata *plat = dev_get_platdata(dev);
+ fdt_addr_t addr;
+
+ addr = devfdt_get_addr(dev);
+ if (addr == FDT_ADDR_T_NONE)
+ return -EINVAL;
+ plat->regs = (void __iomem *)addr;
+
+ return 0;
+}
+
+static struct clk_ops socfpga_clk_ops = {
+ .get_rate = socfpga_clk_get_rate,
+};
+
+static const struct udevice_id socfpga_clk_match[] = {
+ { .compatible = "intel,agilex-clkmgr" },
+ {}
+};
+
+U_BOOT_DRIVER(socfpga_agilex_clk) = {
+ .name = "clk-agilex",
+ .id = UCLASS_CLK,
+ .of_match = socfpga_clk_match,
+ .ops = &socfpga_clk_ops,
+ .probe = socfpga_clk_probe,
+ .ofdata_to_platdata = socfpga_clk_ofdata_to_platdata,
+ .platdata_auto_alloc_size = sizeof(struct socfpga_clk_platdata),
+};
generated by cgit v1.2.3 (git 2.0.4) at 2024-07-02 03:16:10 +0000