Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b8f2b0c5 authored by Veerabhadrarao Badiganti's avatar Veerabhadrarao Badiganti
Browse files

mmc: host: sdhci-msm: Configure dll-user-control in dll init sequence 



With SDCC v5.1.0, additional setting needed for enabling DLL output.
The dll-user-control register need to be configured during dll
initialization for getting proper dll output.

Without this configuration, we don't get the DLL lock status properly.

Change-Id: Ic9e15e5ad8ccec515430035140d9580039721b20
Signed-off-by: default avatarVeerabhadrarao Badiganti <vbadigan@codeaurora.org>
parent 2b029ca3

drivers/mmc/host/sdhci-msm.c

+17 −0
Original line number Diff line number Diff line
@@ -158,6 +158,8 @@ 
#define DDR_CONFIG_PRG_RCLK_DLY_MASK	0x1FF

#define DDR_CONFIG_PRG_RCLK_DLY		115

#define DDR_CONFIG_2_POR_VAL		0x80040873

#define DLL_USR_CTL_POR_VAL		0x10800

#define ENABLE_DLL_LOCK_STATUS		(1 << 26)



/* 512 descriptors */

#define SDHCI_MSM_MAX_SEGMENTS  (1 << 9)
@@ -200,6 +202,7 @@ struct sdhci_msm_offset { 
	u32 CORE_DLL_CONFIG_2;

	u32 CORE_DDR_CONFIG;

	u32 CORE_DDR_CONFIG_2;

	u32 CORE_DLL_USR_CTL; /* Present on SDCC5.1 onwards */

};



struct sdhci_msm_offset sdhci_msm_offset_mci_removed = {
@@ -229,6 +232,7 @@ struct sdhci_msm_offset sdhci_msm_offset_mci_removed = { 
	.CORE_DLL_CONFIG_2 = 0x254,

	.CORE_DDR_CONFIG = 0x258,

	.CORE_DDR_CONFIG_2 = 0x25C,

	.CORE_DLL_USR_CTL = 0x388,

};



struct sdhci_msm_offset sdhci_msm_offset_mci_present = {
@@ -795,6 +799,15 @@ static int msm_init_cm_dll(struct sdhci_host *host) 
				msm_host_offset->CORE_DLL_CONFIG_2);

	}



	/*

	 * Configure DLL user control register to enable DLL status

	 * This setting is applicable to SDCC v5.1 onwards only

	 */

	if (msm_host->need_dll_user_ctl) {

		writel_relaxed(DLL_USR_CTL_POR_VAL | ENABLE_DLL_LOCK_STATUS,

			host->ioaddr + msm_host_offset->CORE_DLL_USR_CTL);

	}



	/* Set DLL_EN bit to 1. */

	writel_relaxed((readl_relaxed(host->ioaddr +

			msm_host_offset->CORE_DLL_CONFIG) | CORE_DLL_EN),
@@ -4563,6 +4576,10 @@ static void sdhci_set_default_hw_caps(struct sdhci_msm_host *msm_host, 
		msm_host->ice_hci_support = true;

		host->cdr_support = true;

	}



	if ((major == 1) && (minor >= 0x71))

		msm_host->need_dll_user_ctl = true;



}



#ifdef CONFIG_MMC_CQ_HCI

drivers/mmc/host/sdhci-msm.h

+1 −0
Original line number Diff line number Diff line
@@ -257,6 +257,7 @@ struct sdhci_msm_host { 
	struct sdhci_msm_regs_restore regs_restore;

	int soc_min_rev;

	struct workqueue_struct *pm_qos_wq;

	bool need_dll_user_ctl;

};



extern char *saved_command_line;