diff options
| author | Tom Rini <trini@konsulko.com> | 2018-06-08 17:00:46 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-06-08 17:00:46 +0300 |
| commit | 8da19df5b504f1cbe79e13f859bc229c042aded5 (patch) | |
| tree | 004759c6f07482af3f62ad086f1b1e10e16bb2ae /drivers | |
| parent | 8f48cf9f1758a2c5cef05381401184959af64a69 (diff) | |
| parent | d78ecc733988d07a87c97f7f1c19171c437a8712 (diff) | |
| download | u-boot-8da19df5b504f1cbe79e13f859bc229c042aded5.tar.xz | |
Merge branch 'master' of git://git.denx.de/u-boot-i2c
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/i2c/mvtwsi.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/i2c/mvtwsi.c b/drivers/i2c/mvtwsi.c index f9822e56b8..74ac0a4aa7 100644 --- a/drivers/i2c/mvtwsi.c +++ b/drivers/i2c/mvtwsi.c @@ -11,6 +11,7 @@ #include <i2c.h> #include <linux/errno.h> #include <asm/io.h> +#include <linux/bitops.h> #include <linux/compat.h> #ifdef CONFIG_DM_I2C #include <dm.h> @@ -57,6 +58,7 @@ struct mvtwsi_registers { u32 status; u32 baudrate; u32 soft_reset; + u32 debug; /* Dummy field for build compatibility with mvebu */ }; #else @@ -70,8 +72,10 @@ struct mvtwsi_registers { u32 baudrate; /* When writing */ }; u32 xtnd_slave_addr; - u32 reserved[2]; + u32 reserved0[2]; u32 soft_reset; + u32 reserved1[27]; + u32 debug; }; #endif @@ -795,6 +799,23 @@ static int mvtwsi_i2c_ofdata_to_platdata(struct udevice *bus) return 0; } +static void twsi_disable_i2c_slave(struct mvtwsi_registers *twsi) +{ + clrbits_le32(&twsi->debug, BIT(18)); +} + +static int mvtwsi_i2c_bind(struct udevice *bus) +{ + struct mvtwsi_registers *twsi = devfdt_get_addr_ptr(bus); + + /* Disable the hidden slave in i2c0 of these platforms */ + if ((IS_ENABLED(CONFIG_ARMADA_38X) || IS_ENABLED(CONFIG_KIRKWOOD)) + && bus->req_seq == 0) + twsi_disable_i2c_slave(twsi); + + return 0; +} + static int mvtwsi_i2c_probe(struct udevice *bus) { struct mvtwsi_i2c_dev *dev = dev_get_priv(bus); @@ -850,6 +871,7 @@ U_BOOT_DRIVER(i2c_mvtwsi) = { .name = "i2c_mvtwsi", .id = UCLASS_I2C, .of_match = mvtwsi_i2c_ids, + .bind = mvtwsi_i2c_bind, .probe = mvtwsi_i2c_probe, .ofdata_to_platdata = mvtwsi_i2c_ofdata_to_platdata, .priv_auto_alloc_size = sizeof(struct mvtwsi_i2c_dev), |