diff options
| author | Jules Maselbas <jmaselbas@kalray.eu> | 2023-08-18 16:22:41 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2023-08-21 07:59:14 +0200 |
| commit | 5a46b9b52ce099e809957991f4fdd081606d40dd (patch) | |
| tree | 03d93256f2c4ab3836cdc59585dd7b6d1f3564ec /drivers/mci/sdhci.c | |
| parent | 1dfdbae14e81cefb2a87e66426e363d2adec7a06 (diff) | |
| download | barebox-5a46b9b52ce099e809957991f4fdd081606d40dd.tar.gz barebox-5a46b9b52ce099e809957991f4fdd081606d40dd.tar.xz | |
mci: sdhci: Add sd host v4 mode
Signed-off-by: Jules Maselbas <jmaselbas@kalray.eu>
Link: https://lore.barebox.org/20230818142244.17157-4-jmaselbas@kalray.eu
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/mci/sdhci.c')
| -rw-r--r-- | drivers/mci/sdhci.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/mci/sdhci.c b/drivers/mci/sdhci.c index a980e34314..bce4ff2a14 100644 --- a/drivers/mci/sdhci.c +++ b/drivers/mci/sdhci.c @@ -480,6 +480,24 @@ void sdhci_set_clock(struct sdhci *host, unsigned int clock, unsigned int input_ sdhci_enable_clk(host, clk); } +static void sdhci_do_enable_v4_mode(struct sdhci *host) +{ + u16 ctrl2; + + ctrl2 = sdhci_read16(host, SDHCI_HOST_CONTROL2); + if (ctrl2 & SDHCI_CTRL_V4_MODE) + return; + + ctrl2 |= SDHCI_CTRL_V4_MODE; + sdhci_write16(host, SDHCI_HOST_CONTROL2, ctrl2); +} + +void sdhci_enable_v4_mode(struct sdhci *host) +{ + host->v4_mode = true; + sdhci_do_enable_v4_mode(host); +} + void __sdhci_read_caps(struct sdhci *host, const u16 *ver, const u32 *caps, const u32 *caps1) { @@ -497,6 +515,9 @@ void __sdhci_read_caps(struct sdhci *host, const u16 *ver, sdhci_reset(host, SDHCI_RESET_ALL); + if (host->v4_mode) + sdhci_do_enable_v4_mode(host); + of_property_read_u64(np, "sdhci-caps-mask", &dt_caps_mask); of_property_read_u64(np, "sdhci-caps", &dt_caps); |