diff options
Diffstat (limited to '')
| -rw-r--r-- | bsps/arm/imxrt/i2c/imxrt-lpi2c.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/bsps/arm/imxrt/i2c/imxrt-lpi2c.c b/bsps/arm/imxrt/i2c/imxrt-lpi2c.c index 783c6e18e6..9b983f24af 100644 --- a/bsps/arm/imxrt/i2c/imxrt-lpi2c.c +++ b/bsps/arm/imxrt/i2c/imxrt-lpi2c.c @@ -1,7 +1,7 @@ /* SPDX-License-Identifier: BSD-2-Clause */ /* - * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de) + * Copyright (C) 2020 embedded brains GmbH & Co. KG * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -373,12 +373,15 @@ static int imxrt_lpi2c_hw_init(struct imxrt_lpi2c_bus *bus) return 0; } -static uint32_t imxrt_lpi2c_get_src_freq(void) +static uint32_t imxrt_lpi2c_get_src_freq(clock_ip_name_t clock_ip) { uint32_t freq; +#if IMXRT_IS_MIMXRT10xx uint32_t mux; uint32_t divider; + (void) clock_ip; /* Not necessary for i.MXRT1050 */ + mux = CLOCK_GetMux(kCLOCK_Lpi2cMux); divider = 1; @@ -396,6 +399,17 @@ static uint32_t imxrt_lpi2c_get_src_freq(void) divider *= CLOCK_GetDiv(kCLOCK_Lpi2cDiv) + 1; freq /= divider; +#elif IMXRT_IS_MIMXRT11xx + /* + * FIXME: A future version of the mcux_sdk might provide a better method to + * get the clock instead of this hack. + */ + clock_root_t clock_root = clock_ip + kCLOCK_Root_Lpi2c1 - kCLOCK_Lpi2c1; + + freq = CLOCK_GetRootClockFreq(clock_root); +#else + #error Getting I2C frequency is not implemented for this chip. +#endif return freq; } @@ -457,7 +471,7 @@ void imxrt_lpi2c_init(void) } bus->clock_ip = imxrt_lpi2c_clock_ip(bus->regs); - bus->src_clock_hz = imxrt_lpi2c_get_src_freq(); + bus->src_clock_hz = imxrt_lpi2c_get_src_freq(bus->clock_ip); eno = imxrt_lpi2c_hw_init(bus); if (eno != 0) { |