icE1usb fw: Don't store E1_*_CR_*_CLR in variables
Those clear bits are only set once at start-up and then later
explicitly. They shouldn't be stored with the user configuration
in state variables.
Change-Id: If38e86aefea7f1be4e1ff5a88860f8be593eeedc
diff --git a/firmware/ice40-riscv/icE1usb/e1.c b/firmware/ice40-riscv/icE1usb/e1.c
index 7682ce0..b1771f5 100644
--- a/firmware/ice40-riscv/icE1usb/e1.c
+++ b/firmware/ice40-riscv/icE1usb/e1.c
@@ -248,17 +248,15 @@
e1f_reset(&g_e1.tx.fifo, 128, 128);
/* Enable Rx */
- g_e1.rx.cr = E1_RX_CR_OVFL_CLR |
- E1_RX_CR_MODE_MFA |
+ g_e1.rx.cr = E1_RX_CR_MODE_MFA |
E1_RX_CR_ENABLE;
- e1_regs->rx.csr = g_e1.rx.cr;
+ e1_regs->rx.csr = E1_RX_CR_OVFL_CLR | g_e1.rx.cr;
/* Enable Tx */
- g_e1.tx.cr = E1_TX_CR_UNFL_CLR |
- (clk_mode ? E1_TX_CR_TICK_REMOTE : E1_TX_CR_TICK_LOCAL) |
+ g_e1.tx.cr = (clk_mode ? E1_TX_CR_TICK_REMOTE : E1_TX_CR_TICK_LOCAL) |
E1_TX_CR_MODE_TS0_CRC_E |
E1_TX_CR_ENABLE;
- e1_regs->tx.csr = g_e1.tx.cr;
+ e1_regs->tx.csr = E1_TX_CR_UNFL_CLR | g_e1.tx.cr;
/* State */
g_e1.rx.state = BOOT;