--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2015 Broadcom
+ */
+/*
+
+*/
+
+#include "pmc_drv.h"
+#include "pmc_rdp.h"
+#include "asm/arch/BPCM.h"
+
+#define PRINTK printf
+
+static int pmc_rdp_start_pll_with_clk(uint32_t clk)
+{
+ uint32_t bpcmResReg;
+ uint32_t error;
+
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, PLLBPCMRegOffset(resets), 0))
+ PRINTK
+ ("failed to configure PMB RDPPLL at word offset of 0x%02x\n",
+ (unsigned int)PLLBPCMRegOffset(resets));
+
+#if 0 // FIXME! after we know how to pass the RDP clk info, also clean the hardcode value?
+ if (clk == 550 MHz) {
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, 0x7, 0x00000084))
+ PRINTK("failed to configure PMB RDPPLL 0x7\n");
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, 0x8, 0x80000002))
+ PRINTK("failed to configure PMB RDPPLL 0x8\n");
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, 0xb, 0x800c8006))
+ PRINTK("failed to configure PMB RDPPLL 0xb\n");
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, 0xc, 0x81008021))
+ PRINTK("failed to configure PMB RDPPLL 0xc\n");
+ PRINTK
+ ("%s:setting up RDP PLL to run at reduced speed of 550/275 MHz\n",
+ __func__);
+ } else if (clk == 400 MHz) {
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, 0x7, 0x00000080))
+ PRINTK("failed to configure PMB RDPPLL 0x7\n");
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, 0x8, 0x80000002))
+ PRINTK("failed to configure PMB RDPPLL 0x8\n");
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, 0xb, 0x80108008))
+ PRINTK("failed to configure PMB RDPPLL 0xb\n");
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, 0xc, 0x81008020))
+ PRINTK("failed to configure PMB RDPPLL 0xc\n");
+ PRINTK
+ ("%s:setting up RDP PLL to run at reduced speed of 400/200 MHz\n",
+ __func__);
+ } else if (clk == 200 MHz) {
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, 0x7, 0x00000080))
+ PRINTK("failed to configure PMB RDPPLL 0x7\n");
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, 0x8, 0x80000002))
+ PRINTK("failed to configure PMB RDPPLL 0x8\n");
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, 0xb, 0x80208010))
+ PRINTK("failed to configure PMB RDPPLL 0xb\n");
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, 0xc, 0x81008020))
+ PRINTK("failed to configure PMB RDPPLL 0xc\n");
+ PRINTK
+ ("%s:setting up RDP PLL to run at reduced speed of 200/100 MHz\n",
+ __func__);
+ }
+#endif
+
+ error = ReadBPCMRegister(PMB_ADDR_RDPPLL, PLLBPCMRegOffset(resets),
+ (uint32_t *) & bpcmResReg);
+ if (error)
+ PRINTK("Failed to ReadBPCMRegister RDPPLL block at word offset "
+ "of 0x%02x\n", (unsigned int)PLLBPCMRegOffset(resets));
+
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, PLLBPCMRegOffset(resets),
+ (bpcmResReg | (1 << 0))))
+ PRINTK("failed to configure PMB RDPPLL of 0x%02x\n",
+ (unsigned int)PLLBPCMRegOffset(resets));
+
+ do {
+ error = ReadBPCMRegister(PMB_ADDR_RDPPLL,
+ PLLBPCMRegOffset(stat),
+ (uint32_t *) & bpcmResReg);
+ if (error)
+ PRINTK("Failed to ReadBPCMRegister RDPPLL block "
+ "0x%02x\n",
+ (unsigned int)PLLBPCMRegOffset(stat));
+ } while (!(bpcmResReg & 0x80000000));
+
+ error = ReadBPCMRegister(PMB_ADDR_RDPPLL, PLLBPCMRegOffset(resets),
+ (uint32_t *) & bpcmResReg);
+ if (error)
+ PRINTK("Failed to ReadBPCMRegister RDPPLL block at word offset "
+ "of 0x%02x\n", (unsigned int)PLLBPCMRegOffset(resets));
+
+ if (WriteBPCMRegister(PMB_ADDR_RDPPLL, PLLBPCMRegOffset(resets),
+ (bpcmResReg | (1 << 1))))
+ PRINTK("failed to configure PMB RDPPLL of 0x%02x\n",
+ (unsigned int)PLLBPCMRegOffset(resets));
+ return error;
+}
+
+int pmc_rdp_power_up(void)
+{
+#if defined(PMB_ADDR_RDP)
+ return PowerOnDevice(PMB_ADDR_RDP);
+#endif
+#if 0
+ int i, ret;
+ BPCM_PWR_ZONE_N_CONTROL pwr_zone_ctrl;
+
+ for (i = 0; i < PMB_ZONES_RDP; i++) {
+ ret = ReadZoneRegister(PMB_ADDR_RDP, i, 0,
+ &pwr_zone_ctrl.Reg32);
+ if (ret)
+ return;
+ pwr_zone_ctrl.Bits.pwr_dn_req = 0;
+ pwr_zone_ctrl.Bits.dpg_ctl_en = 1;
+ pwr_zone_ctrl.Bits.pwr_up_req = 1;
+ pwr_zone_ctrl.Bits.mem_pwr_ctl_en = 1;
+ pwr_zone_ctrl.Bits.blk_reset_assert = 1;
+
+ ret = WriteZoneRegister(PMB_ADDR_RDP, i, 0,
+ pwr_zone_ctrl.Reg32);
+ if (ret)
+ return;
+ }
+#endif
+}
+
+int pmc_rdp_power_down(void)
+{
+#if defined(PMB_ADDR_RDP)
+ return PowerOffDevice(PMB_ADDR_RDP, 0);
+#endif
+#if 0
+ int i, ret;
+ BPCM_PWR_ZONE_N_CONTROL pwr_zone_ctrl;
+
+ for (i = 0; i < PMB_ZONES_RDP; i++) {
+ ret = ReadZoneRegister(PMB_ADDR_RDP, i, 0,
+ &pwr_zone_ctrl.Reg32);
+ if (ret)
+ return;
+ pwr_zone_ctrl.Bits.pwr_dn_req = 1;
+ pwr_zone_ctrl.Bits.dpg_ctl_en = 0;
+ pwr_zone_ctrl.Bits.pwr_up_req = 0;
+ pwr_zone_ctrl.Bits.mem_pwr_ctl_en = 0;
+ pwr_zone_ctrl.Bits.blk_reset_assert = 0;
+
+ ret = WriteZoneRegister(PMB_ADDR_RDP, i, 0,
+ pwr_zone_ctrl.Reg32);
+ if (ret)
+ return;
+ }
+#endif
+}
+
+int pmc_rdp_init(void)
+{
+ int ret;
+
+ pmc_rdp_start_pll_with_clk(0);
+
+#if defined(PMB_ADDR_RDP)
+ /* put all RDP modules in reset state */
+ ret = WriteBPCMRegister(PMB_ADDR_RDP, BPCMRegOffset(sr_control), 0);
+ if (ret)
+ PRINTK("%s:%d:failed to configure PMB RDP at word offset of "
+ "0x%02x\n", __func__, __LINE__,
+ (unsigned int)BPCMRegOffset(sr_control));
+#endif
+
+ ret = pmc_rdp_power_down();
+ if (ret)
+ PRINTK("%s:%d:initialization fails! ret = %d\n", __func__,
+ __LINE__, ret);
+
+ ret = pmc_rdp_power_up();
+ if (ret)
+ PRINTK("%s:%d:initialization fails! ret = %d\n", __func__,
+ __LINE__, ret);
+
+#if defined(PMB_ADDR_RDP)
+ /* we will just put all the modules off reset */
+ ret = WriteBPCMRegister(PMB_ADDR_RDP, BPCMRegOffset(sr_control),
+ 0xffffffff);
+ if (ret)
+ PRINTK("%s:%d:failed to configure PMB RDP at word offset of "
+ "0x%02x\n", __func__, __LINE__,
+ (unsigned int)BPCMRegOffset(sr_control));
+#endif
+
+ return ret;
+}
+
+int pmc_rdp_shut_down(void)
+{
+#if defined(PMB_ADDR_RDP)
+ int ret;
+
+ /* put all RDP modules in reset state */
+ ret = WriteBPCMRegister(PMB_ADDR_RDP, BPCMRegOffset(sr_control), 0);
+ if (ret)
+ PRINTK("%s:%d:failed to configure PMB RDP at word offset of "
+ "0x%02x\n", __func__, __LINE__,
+ (unsigned int)BPCMRegOffset(sr_control));
+ return ret;
+#else
+ return -1;
+#endif
+}
projects / project / bcm63xx / u-boot.git / blobdiff