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4e6ad4fb56
Expose the RTL8730E I2C controllers through the shared Ameba I2C driver (arch/arm/src/common/ameba/ameba_i2c.c) by adding the chip-specific glue, build wiring and a board bus table. The change is gated by CONFIG_AMEBA_I2C (default disabled). Chip glue (ameba_i2c_chip.h) supplies the three controller register bases, the APB function/clock masks -- amebasmart encodes these in bit 25/26/27 with the group selector bit30=0, unlike the (bit30 | bit10/11) layout of the KM4-based parts -- and the pad-mux code. amebasmart has a single generic PINMUX_FUNCTION_I2C shared by every I2C pad instead of per-signal SCL/SDA crossbar codes, and its I2C_InitTypeDef omits the DMA request-level fields, so AMEBA_I2C_HAS_DMA_FIELDS stays undefined. The whole I2C fwlib lives in ram_common/ameba_i2c.c rather than lib_rom.a, so it is compiled into libameba_fwlib.a when I2C is enabled. The shared driver gains an optional per-controller IP-clock hook, AMEBA_I2C_IPCLK_FN(bus). amebasmart needs it because its I2C_StructInit() fills in a 10 MHz placeholder rather than the real reference clock (the other Ameba parts fill in a correct XTAL_ClkGet() / PLL_GetHBUSClk() / HPERI_ClkGet()), which makes I2C_SetSpeed() miscompute the SCL counts. The hook resolves the rate at run time: the two HS controllers sit on HS_AHB, i.e. NP_PLL divided by REG_LSYS_CKD_GRP0.CKD_HBUS, so it is a PLL/board setting and not a constant -- an EVB measured CKD_HBUS=8 (div9, 88.9 MHz) while the SDK's own I2CCLK_TABLE claims a flat 100 MHz and the register reset value would imply 80 MHz. The LP-domain I2C0 keeps its fixed 20 MHz. Chips that leave the macro undefined use the fwlib default and are unaffected; regression-tested on pke8721daf:i2c. All three controllers are registered: /dev/i2c0 on PA9/PA10, /dev/i2c1 on PA3/PA4 and /dev/i2c2 on PB10/PB11. Pad choice is constrained on this chip -- a pad reaches exactly one controller (SDA fixed per controller, SCL the next pad up), and the pads inside the analogue audio ranges (PA20-PA29, PA30-PB2, PB3-PB6) are driven by the codec and leave the bus stuck idle. Both rules are noted in the table's comment. Also add a weak DiagVprintf stub: the I2C fwlib logs through RTK_LOGx() -> rtk_log_write(), and unlike DiagPrintf that symbol is not in the AP ROM symbol table. It is weak so the strong definition in rtl8730e_wifi_stubs.c still wins when WiFi is enabled; both route to vprintf. Hardware-verified on an RTL8730E EVB against a second board running an I2C slave: register read, write, write/read round-trip, multi-byte dump and a full address scan, on all three buses at 100 kHz. Signed-off-by: dechao_gong <dechao_gong@realsil.com.cn> Assisted-by: Claude <noreply@anthropic.com> |
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| .. | ||
| a1x | ||
| am67 | ||
| am335x | ||
| arm | ||
| armv6-m | ||
| armv7-a | ||
| armv7-m | ||
| armv7-r | ||
| armv8-m | ||
| armv8-r | ||
| at32 | ||
| c5471 | ||
| cmake | ||
| common | ||
| csk6 | ||
| cxd32xx | ||
| cxd56xx | ||
| dm320 | ||
| efm32 | ||
| eoss3 | ||
| fvp-v8r-aarch32 | ||
| gd32f4 | ||
| goldfish | ||
| ht32f491x3 | ||
| imx1 | ||
| imx6 | ||
| imx9 | ||
| imxrt | ||
| kinetis | ||
| kl | ||
| lc823450 | ||
| lpc17xx_40xx | ||
| lpc31xx | ||
| lpc43xx | ||
| lpc54xx | ||
| lpc214x | ||
| lpc2378 | ||
| max326xx | ||
| mcx-nxxx | ||
| moxart | ||
| mps | ||
| mx8mp | ||
| n32h7 | ||
| nrf52 | ||
| nrf53 | ||
| nrf54l | ||
| nrf91 | ||
| nuc1xx | ||
| phy62xx | ||
| qemu | ||
| ra4 | ||
| ra8m1 | ||
| rp23xx | ||
| rp2040 | ||
| rtl8720c | ||
| rtl8720f | ||
| rtl8721dx | ||
| rtl8721f | ||
| rtl8730e | ||
| s32k1xx | ||
| s32k3xx | ||
| sam34 | ||
| sama5 | ||
| samd2l2 | ||
| samd5e5 | ||
| samv7 | ||
| stm32c0 | ||
| stm32c5 | ||
| stm32f0 | ||
| stm32f1 | ||
| stm32f2 | ||
| stm32f3 | ||
| stm32f4 | ||
| stm32f7 | ||
| stm32g0 | ||
| stm32g4 | ||
| stm32h5 | ||
| stm32h7 | ||
| stm32l0 | ||
| stm32l1 | ||
| stm32l4 | ||
| stm32l5 | ||
| stm32n6 | ||
| stm32u0 | ||
| stm32u3 | ||
| stm32u5 | ||
| stm32wb | ||
| stm32wl5 | ||
| str71x | ||
| tiva | ||
| tlsr82 | ||
| tms570 | ||
| xmc4 | ||
| .gitignore | ||
| CMakeLists.txt | ||
| Makefile | ||