[PATCH v3 06/17] scsi: ufs: ufs-exynos: get sysreg regmap for io-coherency
From: Chanho Park <hidden>
Date: 2021-09-17 06:55:36
Also in:
linux-samsung-soc
Subsystem:
scsi subsystem, the rest · Maintainers:
"James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
UFS_EMBD sharability register of fsys block provides "sharability" setting of ufs-exynos. It can be set via syscon and regmap. Cc: Alim Akhtar <alim.akhtar@samsung.com> Cc: Kiwoong Kim <redacted> Cc: Krzysztof Kozlowski <redacted> Signed-off-by: Chanho Park <redacted> --- drivers/scsi/ufs/ufs-exynos.c | 5 +++++ drivers/scsi/ufs/ufs-exynos.h | 1 + 2 files changed, 6 insertions(+)
diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/scsi/ufs/ufs-exynos.c
index 8a17ba32a721..f7a1b99c823b 100644
--- a/drivers/scsi/ufs/ufs-exynos.c
+++ b/drivers/scsi/ufs/ufs-exynos.c@@ -12,6 +12,7 @@ #include <linux/module.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/mfd/syscon.h> #include <linux/phy/phy.h> #include <linux/platform_device.h>
@@ -906,6 +907,10 @@ static int exynos_ufs_parse_dt(struct device *dev, struct exynos_ufs *ufs) goto out; } + ufs->sysreg = syscon_regmap_lookup_by_phandle(np, "sysreg"); + if (IS_ERR(ufs->sysreg)) + ufs->sysreg = NULL; + ufs->pclk_avail_min = PCLK_AVAIL_MIN; ufs->pclk_avail_max = PCLK_AVAIL_MAX;
diff --git a/drivers/scsi/ufs/ufs-exynos.h b/drivers/scsi/ufs/ufs-exynos.h
index 2e72aabaa673..4f93db893ce8 100644
--- a/drivers/scsi/ufs/ufs-exynos.h
+++ b/drivers/scsi/ufs/ufs-exynos.h@@ -191,6 +191,7 @@ struct exynos_ufs { struct ufs_phy_time_cfg t_cfg; ktime_t entry_hibern8_t; const struct exynos_ufs_drv_data *drv_data; + struct regmap *sysreg; u32 opts; #define EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL BIT(0)
--
2.33.0