add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/spi/spi-rockchip.c
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@@ -478,8 +478,8 @@
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 {
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 	u32 i;
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-	/* burst size: 1, 2, 4, 8 */
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-	for (i = 1; i < 8; i <<= 1) {
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+	/* burst size: 1, 2, 4, 8, 16 */
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+	for (i = 1; i < 16; i <<= 1) {
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 		if (data_len & i)
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 			break;
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 	}
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@@ -906,6 +906,8 @@
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 	cr0 |= ((spi->mode & 0x3) << CR0_SCPH_OFFSET);
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 	if (spi->mode & SPI_CS_HIGH)
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 		cr0 |= BIT(spi->chip_select) << CR0_SOI_OFFSET;
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+	if (spi_controller_is_slave(spi->controller))
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+		cr0 |= CR0_OPM_SLAVE << CR0_OPM_OFFSET;
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 	writel_relaxed(cr0, rs->regs + ROCKCHIP_SPI_CTRLR0);
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