From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Kaustabh Chakraborty <kauschluss@disroot.org>,
Ulf Hansson <ulf.hansson@linaro.org>,
Sasha Levin <sashal@kernel.org>,
jh80.chung@samsung.com, krzk@kernel.org,
linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org
Subject: [PATCH AUTOSEL 6.6 086/294] mmc: dw_mmc: add exynos7870 DW MMC support
Date: Mon, 5 May 2025 18:53:06 -0400 [thread overview]
Message-ID: <20250505225634.2688578-86-sashal@kernel.org> (raw)
In-Reply-To: <20250505225634.2688578-1-sashal@kernel.org>
From: Kaustabh Chakraborty <kauschluss@disroot.org>
[ Upstream commit 7cbe799ac10fd8be85af5e0615c4337f81e575f3 ]
Add support for Exynos7870 DW MMC controllers, for both SMU and non-SMU
variants. These controllers require a quirk to access 64-bit FIFO in 32-bit
accesses (DW_MMC_QUIRK_FIFO64_32).
Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Link: https://lore.kernel.org/r/20250219-exynos7870-mmc-v2-3-b4255a3e39ed@disroot.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/mmc/host/dw_mmc-exynos.c | 41 +++++++++++++++++++++++++++++++-
1 file changed, 40 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index 698408e8bad03..381a61adf06ee 100644
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -28,6 +28,8 @@ enum dw_mci_exynos_type {
DW_MCI_TYPE_EXYNOS5420_SMU,
DW_MCI_TYPE_EXYNOS7,
DW_MCI_TYPE_EXYNOS7_SMU,
+ DW_MCI_TYPE_EXYNOS7870,
+ DW_MCI_TYPE_EXYNOS7870_SMU,
DW_MCI_TYPE_ARTPEC8,
};
@@ -70,6 +72,12 @@ static struct dw_mci_exynos_compatible {
}, {
.compatible = "samsung,exynos7-dw-mshc-smu",
.ctrl_type = DW_MCI_TYPE_EXYNOS7_SMU,
+ }, {
+ .compatible = "samsung,exynos7870-dw-mshc",
+ .ctrl_type = DW_MCI_TYPE_EXYNOS7870,
+ }, {
+ .compatible = "samsung,exynos7870-dw-mshc-smu",
+ .ctrl_type = DW_MCI_TYPE_EXYNOS7870_SMU,
}, {
.compatible = "axis,artpec8-dw-mshc",
.ctrl_type = DW_MCI_TYPE_ARTPEC8,
@@ -86,6 +94,8 @@ static inline u8 dw_mci_exynos_get_ciu_div(struct dw_mci *host)
return EXYNOS4210_FIXED_CIU_CLK_DIV;
else if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
return SDMMC_CLKSEL_GET_DIV(mci_readl(host, CLKSEL64)) + 1;
else
@@ -101,7 +111,8 @@ static void dw_mci_exynos_config_smu(struct dw_mci *host)
* set for non-ecryption mode at this time.
*/
if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420_SMU ||
- priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) {
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU) {
mci_writel(host, MPSBEGIN0, 0);
mci_writel(host, MPSEND0, SDMMC_ENDING_SEC_NR_MAX);
mci_writel(host, MPSCTRL0, SDMMC_MPSCTRL_SECURE_WRITE_BIT |
@@ -127,6 +138,12 @@ static int dw_mci_exynos_priv_init(struct dw_mci *host)
DQS_CTRL_GET_RD_DELAY(priv->saved_strobe_ctrl);
}
+ if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU) {
+ /* Quirk needed for certain Exynos SoCs */
+ host->quirks |= DW_MMC_QUIRK_FIFO64_32;
+ }
+
if (priv->ctrl_type == DW_MCI_TYPE_ARTPEC8) {
/* Quirk needed for the ARTPEC-8 SoC */
host->quirks |= DW_MMC_QUIRK_EXTENDED_TMOUT;
@@ -144,6 +161,8 @@ static void dw_mci_exynos_set_clksel_timing(struct dw_mci *host, u32 timing)
if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
clksel = mci_readl(host, CLKSEL64);
else
@@ -153,6 +172,8 @@ static void dw_mci_exynos_set_clksel_timing(struct dw_mci *host, u32 timing)
if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
mci_writel(host, CLKSEL64, clksel);
else
@@ -223,6 +244,8 @@ static int dw_mci_exynos_resume_noirq(struct device *dev)
if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
clksel = mci_readl(host, CLKSEL64);
else
@@ -231,6 +254,8 @@ static int dw_mci_exynos_resume_noirq(struct device *dev)
if (clksel & SDMMC_CLKSEL_WAKEUP_INT) {
if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
mci_writel(host, CLKSEL64, clksel);
else
@@ -410,6 +435,8 @@ static inline u8 dw_mci_exynos_get_clksmpl(struct dw_mci *host)
if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
return SDMMC_CLKSEL_CCLK_SAMPLE(mci_readl(host, CLKSEL64));
else
@@ -423,6 +450,8 @@ static inline void dw_mci_exynos_set_clksmpl(struct dw_mci *host, u8 sample)
if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
clksel = mci_readl(host, CLKSEL64);
else
@@ -430,6 +459,8 @@ static inline void dw_mci_exynos_set_clksmpl(struct dw_mci *host, u8 sample)
clksel = SDMMC_CLKSEL_UP_SAMPLE(clksel, sample);
if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
mci_writel(host, CLKSEL64, clksel);
else
@@ -444,6 +475,8 @@ static inline u8 dw_mci_exynos_move_next_clksmpl(struct dw_mci *host)
if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
clksel = mci_readl(host, CLKSEL64);
else
@@ -454,6 +487,8 @@ static inline u8 dw_mci_exynos_move_next_clksmpl(struct dw_mci *host)
if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS7 ||
priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870 ||
+ priv->ctrl_type == DW_MCI_TYPE_EXYNOS7870_SMU ||
priv->ctrl_type == DW_MCI_TYPE_ARTPEC8)
mci_writel(host, CLKSEL64, clksel);
else
@@ -633,6 +668,10 @@ static const struct of_device_id dw_mci_exynos_match[] = {
.data = &exynos_drv_data, },
{ .compatible = "samsung,exynos7-dw-mshc-smu",
.data = &exynos_drv_data, },
+ { .compatible = "samsung,exynos7870-dw-mshc",
+ .data = &exynos_drv_data, },
+ { .compatible = "samsung,exynos7870-dw-mshc-smu",
+ .data = &exynos_drv_data, },
{ .compatible = "axis,artpec8-dw-mshc",
.data = &artpec_drv_data, },
{},
--
2.39.5
next prev parent reply other threads:[~2025-05-05 22:59 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20250505225634.2688578-1-sashal@kernel.org>
2025-05-05 22:52 ` [PATCH AUTOSEL 6.6 037/294] mmc: host: Wait for Vdd to settle on card power off Sasha Levin
2025-05-05 22:53 ` Sasha Levin [this message]
2025-05-05 22:53 ` [PATCH AUTOSEL 6.6 087/294] mmc: sdhci: Disable SD card clock before changing parameters Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250505225634.2688578-86-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=jh80.chung@samsung.com \
--cc=kauschluss@disroot.org \
--cc=krzk@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=linux-samsung-soc@vger.kernel.org \
--cc=stable@vger.kernel.org \
--cc=ulf.hansson@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox