mmc: zynq_sdhci: Add support for SD3.0
This patch adds support of SD3.0 for ZynqMP. Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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				|  | @ -24,6 +24,8 @@ ifneq ($(call ifdef_any_of, CONFIG_ZYNQMP_PSU_INIT_ENABLED CONFIG_SPL_BUILD),) | |||
| obj-y += $(init-objs) | ||||
| endif | ||||
| 
 | ||||
| obj-$(CONFIG_MMC_SDHCI_ZYNQ) += tap_delays.o | ||||
| 
 | ||||
| ifndef CONFIG_SPL_BUILD | ||||
| obj-$(CONFIG_CMD_ZYNQMP) += cmds.o | ||||
| endif | ||||
|  |  | |||
|  | @ -0,0 +1,229 @@ | |||
| // SPDX-License-Identifier: GPL-2.0
 | ||||
| /*
 | ||||
|  * Xilinx ZynqMP SoC Tap Delay Programming | ||||
|  * | ||||
|  * Copyright (C) 2018 Xilinx, Inc. | ||||
|  */ | ||||
| 
 | ||||
| #include <common.h> | ||||
| #include <asm/arch/sys_proto.h> | ||||
| 
 | ||||
| #define SD_DLL_CTRL			0xFF180358 | ||||
| #define SD_ITAP_DLY			0xFF180314 | ||||
| #define SD_OTAP_DLY			0xFF180318 | ||||
| #define SD0_DLL_RST_MASK		0x00000004 | ||||
| #define SD0_DLL_RST			0x00000004 | ||||
| #define SD1_DLL_RST_MASK		0x00040000 | ||||
| #define SD1_DLL_RST			0x00040000 | ||||
| #define SD0_ITAPCHGWIN_MASK		0x00000200 | ||||
| #define SD0_ITAPCHGWIN			0x00000200 | ||||
| #define SD1_ITAPCHGWIN_MASK		0x02000000 | ||||
| #define SD1_ITAPCHGWIN			0x02000000 | ||||
| #define SD0_ITAPDLYENA_MASK		0x00000100 | ||||
| #define SD0_ITAPDLYENA			0x00000100 | ||||
| #define SD1_ITAPDLYENA_MASK		0x01000000 | ||||
| #define SD1_ITAPDLYENA			0x01000000 | ||||
| #define SD0_ITAPDLYSEL_MASK		0x000000FF | ||||
| #define SD0_ITAPDLYSEL_HSD		0x00000015 | ||||
| #define SD0_ITAPDLYSEL_SD_DDR50		0x0000003D | ||||
| #define SD0_ITAPDLYSEL_MMC_DDR50	0x00000012 | ||||
| 
 | ||||
| #define SD1_ITAPDLYSEL_MASK		0x00FF0000 | ||||
| #define SD1_ITAPDLYSEL_HSD		0x00150000 | ||||
| #define SD1_ITAPDLYSEL_SD_DDR50		0x003D0000 | ||||
| #define SD1_ITAPDLYSEL_MMC_DDR50	0x00120000 | ||||
| 
 | ||||
| #define SD0_OTAPDLYSEL_MASK		0x0000003F | ||||
| #define SD0_OTAPDLYSEL_MMC_HSD		0x00000006 | ||||
| #define SD0_OTAPDLYSEL_SD_HSD		0x00000005 | ||||
| #define SD0_OTAPDLYSEL_SDR50		0x00000003 | ||||
| #define SD0_OTAPDLYSEL_SDR104_B0	0x00000003 | ||||
| #define SD0_OTAPDLYSEL_SDR104_B2	0x00000002 | ||||
| #define SD0_OTAPDLYSEL_SD_DDR50		0x00000004 | ||||
| #define SD0_OTAPDLYSEL_MMC_DDR50	0x00000006 | ||||
| 
 | ||||
| #define SD1_OTAPDLYSEL_MASK		0x003F0000 | ||||
| #define SD1_OTAPDLYSEL_MMC_HSD		0x00060000 | ||||
| #define SD1_OTAPDLYSEL_SD_HSD		0x00050000 | ||||
| #define SD1_OTAPDLYSEL_SDR50		0x00030000 | ||||
| #define SD1_OTAPDLYSEL_SDR104_B0	0x00030000 | ||||
| #define SD1_OTAPDLYSEL_SDR104_B2	0x00020000 | ||||
| #define SD1_OTAPDLYSEL_SD_DDR50		0x00040000 | ||||
| #define SD1_OTAPDLYSEL_MMC_DDR50	0x00060000 | ||||
| 
 | ||||
| #define MMC_BANK2		0x2 | ||||
| 
 | ||||
| #define MMC_TIMING_UHS_SDR25		1 | ||||
| #define MMC_TIMING_UHS_SDR50		2 | ||||
| #define MMC_TIMING_UHS_SDR104		3 | ||||
| #define MMC_TIMING_UHS_DDR50		4 | ||||
| #define MMC_TIMING_MMC_HS200		5 | ||||
| #define MMC_TIMING_SD_HS		6 | ||||
| #define MMC_TIMING_MMC_DDR52		7 | ||||
| #define MMC_TIMING_MMC_HS		8 | ||||
| 
 | ||||
| void zynqmp_dll_reset(u8 deviceid) | ||||
| { | ||||
| 	/* Issue DLL Reset */ | ||||
| 	if (deviceid == 0) | ||||
| 		zynqmp_mmio_write(SD_DLL_CTRL, SD0_DLL_RST_MASK, | ||||
| 				  SD0_DLL_RST); | ||||
| 	else | ||||
| 		zynqmp_mmio_write(SD_DLL_CTRL, SD1_DLL_RST_MASK, | ||||
| 				  SD1_DLL_RST); | ||||
| 
 | ||||
| 	mdelay(1); | ||||
| 
 | ||||
| 	/* Release DLL Reset */ | ||||
| 	if (deviceid == 0) | ||||
| 		zynqmp_mmio_write(SD_DLL_CTRL, SD0_DLL_RST_MASK, 0x0); | ||||
| 	else | ||||
| 		zynqmp_mmio_write(SD_DLL_CTRL, SD1_DLL_RST_MASK, 0x0); | ||||
| } | ||||
| 
 | ||||
| static void arasan_zynqmp_tap_sdr104(u8 deviceid, u8 timing, u8 bank) | ||||
| { | ||||
| 	if (deviceid == 0) { | ||||
| 		/* Program OTAP */ | ||||
| 		if (bank == MMC_BANK2) | ||||
| 			zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, | ||||
| 					  SD0_OTAPDLYSEL_SDR104_B2); | ||||
| 		else | ||||
| 			zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, | ||||
| 					  SD0_OTAPDLYSEL_SDR104_B0); | ||||
| 	} else { | ||||
| 		/* Program OTAP */ | ||||
| 		if (bank == MMC_BANK2) | ||||
| 			zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, | ||||
| 					  SD1_OTAPDLYSEL_SDR104_B2); | ||||
| 		else | ||||
| 			zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, | ||||
| 					  SD1_OTAPDLYSEL_SDR104_B0); | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| static void arasan_zynqmp_tap_hs(u8 deviceid, u8 timing, u8 bank) | ||||
| { | ||||
| 	if (deviceid == 0) { | ||||
| 		/* Program ITAP */ | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK, | ||||
| 				  SD0_ITAPCHGWIN); | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYENA_MASK, | ||||
| 				  SD0_ITAPDLYENA); | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYSEL_MASK, | ||||
| 				  SD0_ITAPDLYSEL_HSD); | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK, 0x0); | ||||
| 		/* Program OTAP */ | ||||
| 		if (timing == MMC_TIMING_MMC_HS) | ||||
| 			zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, | ||||
| 					  SD0_OTAPDLYSEL_MMC_HSD); | ||||
| 		else | ||||
| 			zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, | ||||
| 					  SD0_OTAPDLYSEL_SD_HSD); | ||||
| 	} else { | ||||
| 		/* Program ITAP */ | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK, | ||||
| 				  SD1_ITAPCHGWIN); | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYENA_MASK, | ||||
| 				  SD1_ITAPDLYENA); | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYSEL_MASK, | ||||
| 				  SD1_ITAPDLYSEL_HSD); | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK, 0x0); | ||||
| 		/* Program OTAP */ | ||||
| 		if (timing == MMC_TIMING_MMC_HS) | ||||
| 			zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, | ||||
| 					  SD1_OTAPDLYSEL_MMC_HSD); | ||||
| 		else | ||||
| 			zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, | ||||
| 					  SD1_OTAPDLYSEL_SD_HSD); | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| static void arasan_zynqmp_tap_ddr50(u8 deviceid, u8 timing, u8 bank) | ||||
| { | ||||
| 	if (deviceid == 0) { | ||||
| 		/* Program ITAP */ | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK, | ||||
| 				  SD0_ITAPCHGWIN); | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYENA_MASK, | ||||
| 				  SD0_ITAPDLYENA); | ||||
| 		if (timing == MMC_TIMING_UHS_DDR50) | ||||
| 			zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYSEL_MASK, | ||||
| 					  SD0_ITAPDLYSEL_SD_DDR50); | ||||
| 		else | ||||
| 			zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPDLYSEL_MASK, | ||||
| 					  SD0_ITAPDLYSEL_MMC_DDR50); | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD0_ITAPCHGWIN_MASK, 0x0); | ||||
| 		/* Program OTAP */ | ||||
| 		if (timing == MMC_TIMING_UHS_DDR50) | ||||
| 			zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, | ||||
| 					  SD0_OTAPDLYSEL_SD_DDR50); | ||||
| 		else | ||||
| 			zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, | ||||
| 					  SD0_OTAPDLYSEL_MMC_DDR50); | ||||
| 	} else { | ||||
| 		/* Program ITAP */ | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK, | ||||
| 				  SD1_ITAPCHGWIN); | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYENA_MASK, | ||||
| 				  SD1_ITAPDLYENA); | ||||
| 		if (timing == MMC_TIMING_UHS_DDR50) | ||||
| 			zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYSEL_MASK, | ||||
| 					  SD1_ITAPDLYSEL_SD_DDR50); | ||||
| 		else | ||||
| 			zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPDLYSEL_MASK, | ||||
| 					  SD1_ITAPDLYSEL_MMC_DDR50); | ||||
| 		zynqmp_mmio_write(SD_ITAP_DLY, SD1_ITAPCHGWIN_MASK, 0x0); | ||||
| 		/* Program OTAP */ | ||||
| 		if (timing == MMC_TIMING_UHS_DDR50) | ||||
| 			zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, | ||||
| 					  SD1_OTAPDLYSEL_SD_DDR50); | ||||
| 		else | ||||
| 			zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, | ||||
| 					  SD1_OTAPDLYSEL_MMC_DDR50); | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| static void arasan_zynqmp_tap_sdr50(u8 deviceid, u8 timing, u8 bank) | ||||
| { | ||||
| 	if (deviceid == 0) { | ||||
| 		/* Program OTAP */ | ||||
| 		zynqmp_mmio_write(SD_OTAP_DLY, SD0_OTAPDLYSEL_MASK, | ||||
| 				  SD0_OTAPDLYSEL_SDR50); | ||||
| 	} else { | ||||
| 		/* Program OTAP */ | ||||
| 		zynqmp_mmio_write(SD_OTAP_DLY, SD1_OTAPDLYSEL_MASK, | ||||
| 				  SD1_OTAPDLYSEL_SDR50); | ||||
| 	} | ||||
| } | ||||
| 
 | ||||
| void arasan_zynqmp_set_tapdelay(u8 deviceid, u8 timing, u8 bank) | ||||
| { | ||||
| 	if (deviceid == 0) | ||||
| 		zynqmp_mmio_write(SD_DLL_CTRL, SD0_DLL_RST_MASK, | ||||
| 				  SD0_DLL_RST); | ||||
| 	else | ||||
| 		zynqmp_mmio_write(SD_DLL_CTRL, SD1_DLL_RST_MASK, | ||||
| 				  SD1_DLL_RST); | ||||
| 
 | ||||
| 	switch (timing) { | ||||
| 	case MMC_TIMING_UHS_SDR25: | ||||
| 		arasan_zynqmp_tap_hs(deviceid, timing, bank); | ||||
| 		break; | ||||
| 	case MMC_TIMING_UHS_SDR50: | ||||
| 		arasan_zynqmp_tap_sdr50(deviceid, timing, bank); | ||||
| 		break; | ||||
| 	case MMC_TIMING_UHS_SDR104: | ||||
| 	case MMC_TIMING_MMC_HS200: | ||||
| 		arasan_zynqmp_tap_sdr104(deviceid, timing, bank); | ||||
| 		break; | ||||
| 	case MMC_TIMING_UHS_DDR50: | ||||
| 		arasan_zynqmp_tap_ddr50(deviceid, timing, bank); | ||||
| 		break; | ||||
| 	} | ||||
| 
 | ||||
| 	if (deviceid == 0) | ||||
| 		zynqmp_mmio_write(SD_DLL_CTRL, SD0_DLL_RST_MASK, 0x0); | ||||
| 	else | ||||
| 		zynqmp_mmio_write(SD_DLL_CTRL, SD1_DLL_RST_MASK, 0x0); | ||||
| } | ||||
|  | @ -9,9 +9,11 @@ | |||
| #include <common.h> | ||||
| #include <dm.h> | ||||
| #include <fdtdec.h> | ||||
| #include "mmc_private.h" | ||||
| #include <linux/libfdt.h> | ||||
| #include <malloc.h> | ||||
| #include <sdhci.h> | ||||
| #include <zynqmp_tap_delay.h> | ||||
| 
 | ||||
| DECLARE_GLOBAL_DATA_PTR; | ||||
| 
 | ||||
|  | @ -21,15 +23,212 @@ struct arasan_sdhci_plat { | |||
| 	unsigned int f_max; | ||||
| }; | ||||
| 
 | ||||
| struct arasan_sdhci_priv { | ||||
| 	struct sdhci_host *host; | ||||
| 	u8 deviceid; | ||||
| 	u8 bank; | ||||
| 	u8 no_1p8; | ||||
| 	bool pwrseq; | ||||
| }; | ||||
| 
 | ||||
| #if defined(CONFIG_ARCH_ZYNQMP) | ||||
| static const u8 mode2timing[] = { | ||||
| 	     [UHS_SDR12] = UHS_SDR12_BUS_SPEED, | ||||
| 	     [UHS_SDR25] = UHS_SDR25_BUS_SPEED, | ||||
| 	     [UHS_SDR50] = UHS_SDR50_BUS_SPEED, | ||||
| 	     [UHS_SDR104] = UHS_SDR104_BUS_SPEED, | ||||
| 	     [UHS_DDR50] = UHS_DDR50_BUS_SPEED, | ||||
| }; | ||||
| 
 | ||||
| #define SDHCI_HOST_CTRL2	0x3E | ||||
| #define SDHCI_CTRL2_MODE_MASK	0x7 | ||||
| #define SDHCI_18V_SIGNAL	0x8 | ||||
| #define SDHCI_CTRL_EXEC_TUNING	0x0040 | ||||
| #define SDHCI_CTRL_TUNED_CLK	0x80 | ||||
| #define SDHCI_TUNING_LOOP_COUNT	40 | ||||
| 
 | ||||
| static void arasan_zynqmp_dll_reset(struct sdhci_host *host, u8 deviceid) | ||||
| { | ||||
| 	u16 clk; | ||||
| 	unsigned long timeout; | ||||
| 
 | ||||
| 	clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL); | ||||
| 	clk &= ~(SDHCI_CLOCK_CARD_EN); | ||||
| 	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); | ||||
| 
 | ||||
| 	/* Issue DLL Reset */ | ||||
| 	zynqmp_dll_reset(deviceid); | ||||
| 
 | ||||
| 	/* Wait max 20 ms */ | ||||
| 	timeout = 100; | ||||
| 	while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL)) | ||||
| 				& SDHCI_CLOCK_INT_STABLE)) { | ||||
| 		if (timeout == 0) { | ||||
| 			dev_err(mmc_dev(host->mmc), | ||||
| 				": Internal clock never stabilised.\n"); | ||||
| 			return; | ||||
| 		} | ||||
| 		timeout--; | ||||
| 		udelay(1000); | ||||
| 	} | ||||
| 
 | ||||
| 	clk |= SDHCI_CLOCK_CARD_EN; | ||||
| 	sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); | ||||
| } | ||||
| 
 | ||||
| static int arasan_sdhci_execute_tuning(struct mmc *mmc, u8 opcode) | ||||
| { | ||||
| 	struct mmc_cmd cmd; | ||||
| 	struct mmc_data data; | ||||
| 	u32 ctrl; | ||||
| 	struct sdhci_host *host; | ||||
| 	struct arasan_sdhci_priv *priv = dev_get_priv(mmc->dev); | ||||
| 	u8 tuning_loop_counter = SDHCI_TUNING_LOOP_COUNT; | ||||
| 	u8 deviceid; | ||||
| 
 | ||||
| 	debug("%s\n", __func__); | ||||
| 
 | ||||
| 	host = priv->host; | ||||
| 	deviceid = priv->deviceid; | ||||
| 
 | ||||
| 	ctrl = sdhci_readw(host, SDHCI_HOST_CTRL2); | ||||
| 	ctrl |= SDHCI_CTRL_EXEC_TUNING; | ||||
| 	sdhci_writew(host, ctrl, SDHCI_HOST_CTRL2); | ||||
| 
 | ||||
| 	mdelay(1); | ||||
| 
 | ||||
| 	arasan_zynqmp_dll_reset(host, deviceid); | ||||
| 
 | ||||
| 	sdhci_writel(host, SDHCI_INT_DATA_AVAIL, SDHCI_INT_ENABLE); | ||||
| 	sdhci_writel(host, SDHCI_INT_DATA_AVAIL, SDHCI_SIGNAL_ENABLE); | ||||
| 
 | ||||
| 	do { | ||||
| 		cmd.cmdidx = opcode; | ||||
| 		cmd.resp_type = MMC_RSP_R1; | ||||
| 		cmd.cmdarg = 0; | ||||
| 
 | ||||
| 		data.blocksize = 64; | ||||
| 		data.blocks = 1; | ||||
| 		data.flags = MMC_DATA_READ; | ||||
| 
 | ||||
| 		if (tuning_loop_counter-- == 0) | ||||
| 			break; | ||||
| 
 | ||||
| 		if (cmd.cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200 && | ||||
| 		    mmc->bus_width == 8) | ||||
| 			data.blocksize = 128; | ||||
| 
 | ||||
| 		sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG, | ||||
| 						    data.blocksize), | ||||
| 			     SDHCI_BLOCK_SIZE); | ||||
| 		sdhci_writew(host, data.blocks, SDHCI_BLOCK_COUNT); | ||||
| 		sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE); | ||||
| 
 | ||||
| 		mmc_send_cmd(mmc, &cmd, NULL); | ||||
| 		ctrl = sdhci_readw(host, SDHCI_HOST_CTRL2); | ||||
| 
 | ||||
| 		if (cmd.cmdidx == MMC_CMD_SEND_TUNING_BLOCK) | ||||
| 			udelay(1); | ||||
| 
 | ||||
| 	} while (ctrl & SDHCI_CTRL_EXEC_TUNING); | ||||
| 
 | ||||
| 	if (tuning_loop_counter < 0) { | ||||
| 		ctrl &= ~SDHCI_CTRL_TUNED_CLK; | ||||
| 		sdhci_writel(host, ctrl, SDHCI_HOST_CTRL2); | ||||
| 	} | ||||
| 
 | ||||
| 	if (!(ctrl & SDHCI_CTRL_TUNED_CLK)) { | ||||
| 		printf("%s:Tuning failed\n", __func__); | ||||
| 		return -1; | ||||
| 	} | ||||
| 
 | ||||
| 	udelay(1); | ||||
| 	arasan_zynqmp_dll_reset(host, deviceid); | ||||
| 
 | ||||
| 	/* Enable only interrupts served by the SD controller */ | ||||
| 	sdhci_writel(host, SDHCI_INT_DATA_MASK | SDHCI_INT_CMD_MASK, | ||||
| 		     SDHCI_INT_ENABLE); | ||||
| 	/* Mask all sdhci interrupt sources */ | ||||
| 	sdhci_writel(host, 0x0, SDHCI_SIGNAL_ENABLE); | ||||
| 
 | ||||
| 	return 0; | ||||
| } | ||||
| 
 | ||||
| static void arasan_sdhci_set_tapdelay(struct sdhci_host *host) | ||||
| { | ||||
| 	struct arasan_sdhci_priv *priv = dev_get_priv(host->mmc->dev); | ||||
| 	struct mmc *mmc = (struct mmc *)host->mmc; | ||||
| 	u8 uhsmode; | ||||
| 
 | ||||
| 	if (!IS_SD(mmc)) | ||||
| 		return; | ||||
| 
 | ||||
| 	uhsmode = mode2timing[mmc->selected_mode]; | ||||
| 
 | ||||
| 	if (uhsmode >= UHS_SDR25_BUS_SPEED) | ||||
| 		arasan_zynqmp_set_tapdelay(priv->deviceid, uhsmode, | ||||
| 					   priv->bank); | ||||
| } | ||||
| 
 | ||||
| static void arasan_sdhci_set_control_reg(struct sdhci_host *host) | ||||
| { | ||||
| 	struct mmc *mmc = (struct mmc *)host->mmc; | ||||
| 	u32 reg; | ||||
| 
 | ||||
| 	if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_180) { | ||||
| 		reg = sdhci_readw(host, SDHCI_HOST_CTRL2); | ||||
| 		reg |= SDHCI_18V_SIGNAL; | ||||
| 		sdhci_writew(host, reg, SDHCI_HOST_CTRL2); | ||||
| 	} | ||||
| 
 | ||||
| 	if (mmc->selected_mode > SD_HS && | ||||
| 	    mmc->selected_mode <= UHS_DDR50) { | ||||
| 		reg = sdhci_readw(host, SDHCI_HOST_CTRL2); | ||||
| 		reg &= ~SDHCI_CTRL2_MODE_MASK; | ||||
| 		switch (mmc->selected_mode) { | ||||
| 		case UHS_SDR12: | ||||
| 			reg |= UHS_SDR12_BUS_SPEED; | ||||
| 			break; | ||||
| 		case UHS_SDR25: | ||||
| 			reg |= UHS_SDR25_BUS_SPEED; | ||||
| 			break; | ||||
| 		case UHS_SDR50: | ||||
| 			reg |= UHS_SDR50_BUS_SPEED; | ||||
| 			break; | ||||
| 		case UHS_SDR104: | ||||
| 			reg |= UHS_SDR104_BUS_SPEED; | ||||
| 			break; | ||||
| 		case UHS_DDR50: | ||||
| 			reg |= UHS_DDR50_BUS_SPEED; | ||||
| 			break; | ||||
| 		default: | ||||
| 			break; | ||||
| 		} | ||||
| 		sdhci_writew(host, reg, SDHCI_HOST_CTRL2); | ||||
| 	} | ||||
| } | ||||
| #endif | ||||
| 
 | ||||
| #if defined(CONFIG_DM_MMC) && defined(CONFIG_ARCH_ZYNQMP) | ||||
| const struct sdhci_ops arasan_ops = { | ||||
| 	.platform_execute_tuning	= &arasan_sdhci_execute_tuning, | ||||
| 	.set_delay = &arasan_sdhci_set_tapdelay, | ||||
| 	.set_control_reg = &arasan_sdhci_set_control_reg, | ||||
| }; | ||||
| #endif | ||||
| 
 | ||||
| static int arasan_sdhci_probe(struct udevice *dev) | ||||
| { | ||||
| 	struct arasan_sdhci_plat *plat = dev_get_platdata(dev); | ||||
| 	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); | ||||
| 	struct sdhci_host *host = dev_get_priv(dev); | ||||
| 	struct arasan_sdhci_priv *priv = dev_get_priv(dev); | ||||
| 	struct sdhci_host *host; | ||||
| 	struct clk clk; | ||||
| 	unsigned long clock; | ||||
| 	int ret; | ||||
| 
 | ||||
| 	host = priv->host; | ||||
| 
 | ||||
| 	ret = clk_get_by_index(dev, 0, &clk); | ||||
| 	if (ret < 0) { | ||||
| 		dev_err(dev, "failed to get clock\n"); | ||||
|  | @ -41,6 +240,7 @@ static int arasan_sdhci_probe(struct udevice *dev) | |||
| 		dev_err(dev, "failed to get rate\n"); | ||||
| 		return clock; | ||||
| 	} | ||||
| 
 | ||||
| 	debug("%s: CLK %ld\n", __func__, clock); | ||||
| 
 | ||||
| 	ret = clk_enable(&clk); | ||||
|  | @ -56,6 +256,9 @@ static int arasan_sdhci_probe(struct udevice *dev) | |||
| 	host->quirks |= SDHCI_QUIRK_BROKEN_HISPD_MODE; | ||||
| #endif | ||||
| 
 | ||||
| 	if (priv->no_1p8) | ||||
| 		host->quirks |= SDHCI_QUIRK_NO_1_8_V; | ||||
| 
 | ||||
| 	host->max_clk = clock; | ||||
| 
 | ||||
| 	ret = sdhci_setup_cfg(&plat->cfg, host, plat->f_max, | ||||
|  | @ -73,10 +276,28 @@ static int arasan_sdhci_probe(struct udevice *dev) | |||
| static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev) | ||||
| { | ||||
| 	struct arasan_sdhci_plat *plat = dev_get_platdata(dev); | ||||
| 	struct sdhci_host *host = dev_get_priv(dev); | ||||
| 	struct arasan_sdhci_priv *priv = dev_get_priv(dev); | ||||
| 
 | ||||
| 	host->name = dev->name; | ||||
| 	host->ioaddr = (void *)devfdt_get_addr(dev); | ||||
| 	priv->host = calloc(1, sizeof(struct sdhci_host)); | ||||
| 	if (!priv->host) | ||||
| 		return -1; | ||||
| 
 | ||||
| 	priv->host->name = dev->name; | ||||
| 	priv->host->ioaddr = (void *)devfdt_get_addr(dev); | ||||
| 
 | ||||
| 	priv->deviceid = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), | ||||
| 					"xlnx,device_id", -1); | ||||
| 	priv->bank = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), | ||||
| 				    "xlnx,mio_bank", -1); | ||||
| 	if (fdt_get_property(gd->fdt_blob, dev_of_offset(dev), | ||||
| 			     "no-1-8-v", NULL)) | ||||
| 		priv->no_1p8 = 1; | ||||
| 	else | ||||
| 		priv->no_1p8 = 0; | ||||
| 
 | ||||
| #if defined(CONFIG_DM_MMC) && defined(CONFIG_ARCH_ZYNQMP) | ||||
| 	priv->host->ops = &arasan_ops; | ||||
| #endif | ||||
| 
 | ||||
| 	plat->f_max = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev), | ||||
| 				"max-frequency", CONFIG_ZYNQ_SDHCI_MAX_FREQ); | ||||
|  | @ -104,6 +325,6 @@ U_BOOT_DRIVER(arasan_sdhci_drv) = { | |||
| 	.ops		= &sdhci_ops, | ||||
| 	.bind		= arasan_sdhci_bind, | ||||
| 	.probe		= arasan_sdhci_probe, | ||||
| 	.priv_auto_alloc_size = sizeof(struct sdhci_host), | ||||
| 	.priv_auto_alloc_size = sizeof(struct arasan_sdhci_priv), | ||||
| 	.platdata_auto_alloc_size = sizeof(struct arasan_sdhci_plat), | ||||
| }; | ||||
|  |  | |||
|  | @ -0,0 +1,19 @@ | |||
| /* SPDX-License-Identifier: GPL-2.0 */ | ||||
| /*
 | ||||
|  * Xilinx ZynqMP SoC Tap Delay Programming | ||||
|  * | ||||
|  * Copyright (C) 2018 Xilinx, Inc. | ||||
|  */ | ||||
| 
 | ||||
| #ifndef __ZYNQMP_TAP_DELAY_H__ | ||||
| #define __ZYNQMP_TAP_DELAY_H__ | ||||
| 
 | ||||
| #ifdef CONFIG_ARCH_ZYNQMP | ||||
| void zynqmp_dll_reset(u8 deviceid); | ||||
| void arasan_zynqmp_set_tapdelay(u8 device_id, u8 uhsmode, u8 bank); | ||||
| #else | ||||
| inline void zynqmp_dll_reset(u8 deviceid) {} | ||||
| inline void arasan_zynqmp_set_tapdelay(u8 device_id, u8 uhsmode, u8 bank) {} | ||||
| #endif | ||||
| 
 | ||||
| #endif | ||||
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		Reference in New Issue