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Add the min. changes required to support the GF variant. #1492

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merged 1 commit into from
May 8, 2023
Merged

Add the min. changes required to support the GF variant. #1492

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35 changes: 34 additions & 1 deletion nimble/drivers/dialog_cmac/src/ble_rf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,14 @@
#define RF_CALIBRATION_1 (0x02)
#define RF_CALIBRATION_2 (0x04)

enum chip_variant {
CHIP_VARIANT_TSMC,
CHIP_VARIANT_GF,
CHIP_VARIANT_UNKNOWN
};

static int g_chip_variant;

static const int8_t g_ble_rf_power_lvls[] = {
-18, -12, -8, -6, -3, -2, -1, 0, 1, 2, 3, 4, 4, 5, 6
};
Expand Down Expand Up @@ -114,6 +122,21 @@ set_reg16_mask(uint32_t addr, uint16_t mask, uint16_t val)
*reg = (*reg & (~mask)) | (val & mask);
}

static inline int
read_chip_variant(void)
{
uint32_t chip_id1 = get_reg32_bits(0x50040200, 0xFF);

switch (chip_id1) {
case '2':
return CHIP_VARIANT_TSMC;
case '3':
return CHIP_VARIANT_GF;
default:
return CHIP_VARIANT_UNKNOWN;
}
}

static void
delay_us(uint32_t delay_us)
{
Expand Down Expand Up @@ -233,6 +256,9 @@ ble_rf_synth_is_enabled(void)
static void
ble_rf_synth_apply_recommended_settings(void)
{
if (g_chip_variant == CHIP_VARIANT_GF) {
set_reg32_mask(0x40022034, 0x00000018, 0x0215807B);
}
set_reg32_mask(0x40022048, 0x0000000c, 0x000000d5);
set_reg32_mask(0x40022050, 0x00000300, 0x00000300);
set_reg16_mask(0x40022024, 0x0001, 0x0001);
Expand Down Expand Up @@ -335,7 +361,11 @@ ble_rf_calibration_1(void)
set_reg32(0x40020000, 0x0f168820);
set_reg32_bits(0x40022000, 0x00000001, 0);
set_reg32_bits(0x4002101c, 0x00001e00, 0);
set_reg32_bits(0x4002001c, 0x0000003f, 47);
if (g_chip_variant == CHIP_VARIANT_TSMC) {
set_reg32_bits(0x4002001c, 0x0000003f, 47);
} else {
set_reg32_bits(0x4002001c, 0x0000003f, 44);
}
set_reg8(0x40020006, 1);
set_reg32(0x40020020, 16);
set_reg32_bits(0x4002003c, 0x00000800, 1);
Expand Down Expand Up @@ -537,6 +567,9 @@ ble_rf_init(void)
static bool done = false;
uint32_t val;

g_chip_variant = read_chip_variant();
assert(g_chip_variant != CHIP_VARIANT_UNKNOWN);

ble_rf_disable();

if (done) {
Expand Down