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authormengqi.zhang <mengqi.zhang@mediatek.com>2018-07-02 23:23:00 +0800
committerJulius Werner <jwerner@chromium.org>2018-07-27 05:35:23 +0000
commit9faa584cc94e4254d8cba7672671e11f9dc0c893 (patch)
treee0619a6d651015eb6526a9d691b1bf6c471bdb10 /src/soc
parent86d0d6e2cf83b73403823c69792a3ddfe1b00fde (diff)
mediatek/mt8183: Add SPI support
This patch implements SOC-specific code of mt8183 and link the common code to support SPI bus. BUG=b:80501386 BRANCH=none TEST=Boots correctly on Kukui Signed-off-by: mengqi.zhang <mengqi.zhang@mediatek.com> Change-Id: I544e850299c74861313c2425721479fe5b91639e Reviewed-on: https://review.coreboot.org/27498 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Hung-Te Lin <hungte@chromium.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
Diffstat (limited to 'src/soc')
-rw-r--r--src/soc/mediatek/mt8183/Makefile.inc8
-rw-r--r--src/soc/mediatek/mt8183/include/soc/addressmap.h6
-rw-r--r--src/soc/mediatek/mt8183/include/soc/pll.h7
-rw-r--r--src/soc/mediatek/mt8183/include/soc/spi.h53
-rw-r--r--src/soc/mediatek/mt8183/spi.c111
5 files changed, 177 insertions, 8 deletions
diff --git a/src/soc/mediatek/mt8183/Makefile.inc b/src/soc/mediatek/mt8183/Makefile.inc
index 1b3f9d57b7..bd0e54fc80 100644
--- a/src/soc/mediatek/mt8183/Makefile.inc
+++ b/src/soc/mediatek/mt8183/Makefile.inc
@@ -3,7 +3,7 @@ ifeq ($(CONFIG_SOC_MEDIATEK_MT8183),y)
bootblock-y += bootblock.c
bootblock-y += ../common/gpio.c gpio.c
bootblock-y += ../common/pll.c pll.c
-bootblock-$(CONFIG_SPI_FLASH) += spi.c
+bootblock-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c
bootblock-y += ../common/timer.c
ifeq ($(CONFIG_BOOTBLOCK_CONSOLE),y)
bootblock-$(CONFIG_DRIVERS_UART) += ../common/uart.c
@@ -15,7 +15,7 @@ decompressor-y += ../common/mmu_operations.c
decompressor-y += ../common/timer.c
verstage-y += ../common/gpio.c gpio.c
-verstage-$(CONFIG_SPI_FLASH) += spi.c
+verstage-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c
verstage-y += ../common/timer.c
verstage-$(CONFIG_DRIVERS_UART) += ../common/uart.c
verstage-y += ../common/wdt.c
@@ -23,7 +23,7 @@ verstage-y += ../common/wdt.c
romstage-y += emi.c
romstage-y += ../common/gpio.c gpio.c
romstage-y += ../common/mmu_operations.c mmu_operations.c
-romstage-$(CONFIG_SPI_FLASH) += spi.c
+romstage-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c
romstage-y += ../common/timer.c
romstage-$(CONFIG_DRIVERS_UART) += ../common/uart.c
romstage-y += ../common/wdt.c
@@ -33,7 +33,7 @@ ramstage-y += ../common/gpio.c gpio.c
ramstage-y += ../common/mmu_operations.c mmu_operations.c
ramstage-y += ../common/mtcmos.c mtcmos.c
ramstage-y += soc.c
-ramstage-$(CONFIG_SPI_FLASH) += spi.c
+ramstage-$(CONFIG_SPI_FLASH) += ../common/spi.c spi.c
ramstage-y += ../common/timer.c
ramstage-$(CONFIG_DRIVERS_UART) += ../common/uart.c
ramstage-y += ../common/wdt.c
diff --git a/src/soc/mediatek/mt8183/include/soc/addressmap.h b/src/soc/mediatek/mt8183/include/soc/addressmap.h
index d6f54cf5dd..de7eb1f1cb 100644
--- a/src/soc/mediatek/mt8183/include/soc/addressmap.h
+++ b/src/soc/mediatek/mt8183/include/soc/addressmap.h
@@ -31,6 +31,12 @@ enum {
GPT_BASE = IO_PHYS + 0x00008000,
APMIXED_BASE = IO_PHYS + 0x0000C000,
UART0_BASE = IO_PHYS + 0x01002000,
+ SPI0_BASE = IO_PHYS + 0x0100A000,
+ SPI1_BASE = IO_PHYS + 0x01010000,
+ SPI2_BASE = IO_PHYS + 0x01012000,
+ SPI3_BASE = IO_PHYS + 0x01013000,
+ SPI4_BASE = IO_PHYS + 0x01014000,
+ SPI5_BASE = IO_PHYS + 0x01015000,
IOCFG_RT_BASE = IO_PHYS + 0x01C50000,
IOCFG_RM_BASE = IO_PHYS + 0x01D20000,
IOCFG_RB_BASE = IO_PHYS + 0x01D30000,
diff --git a/src/soc/mediatek/mt8183/include/soc/pll.h b/src/soc/mediatek/mt8183/include/soc/pll.h
index d1ceded812..8c0d4e3a2d 100644
--- a/src/soc/mediatek/mt8183/include/soc/pll.h
+++ b/src/soc/mediatek/mt8183/include/soc/pll.h
@@ -260,6 +260,13 @@ enum {
/* top_div rate */
enum {
CLK26M_HZ = 26 * MHz,
+ MAINPLL_D5_HZ = MAINPLL_HZ / 5,
+ MAINPLL_D5_D2_HZ = MAINPLL_D5_HZ / 2,
+};
+
+/* top_mux rate */
+enum {
+ SPI_HZ = MAINPLL_D5_D2_HZ,
};
#endif /* SOC_MEDIATEK_MT8183_PLL_H */
diff --git a/src/soc/mediatek/mt8183/include/soc/spi.h b/src/soc/mediatek/mt8183/include/soc/spi.h
new file mode 100644
index 0000000000..9bc7121847
--- /dev/null
+++ b/src/soc/mediatek/mt8183/include/soc/spi.h
@@ -0,0 +1,53 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2018 MediaTek Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef MTK_MT8183_SPI_H
+#define MTK_MT8183_SPI_H
+
+#include <soc/spi_common.h>
+
+#define SPI_BUS_NUMBER 6
+
+/* SPI peripheral register map. */
+typedef struct mtk_spi_regs {
+ uint32_t spi_cfg0_reg;
+ uint32_t spi_cfg1_reg;
+ uint32_t spi_tx_src_reg;
+ uint32_t spi_rx_dst_reg;
+ uint32_t spi_tx_data_reg;
+ uint32_t spi_rx_data_reg;
+ uint32_t spi_cmd_reg;
+ uint32_t spi_status0_reg;
+ uint32_t spi_status1_reg;
+ uint32_t spi_pad_macro_sel_reg;
+ uint32_t spi_cfg2_reg;
+ uint32_t spi_tx_src_64_reg;
+ uint32_t spi_rx_dst_64_reg;
+} mtk_spi_regs;
+
+check_member(mtk_spi_regs, spi_pad_macro_sel_reg, 0x24);
+
+enum {
+ SPI_CFG0_CS_HOLD_SHIFT = 0,
+ SPI_CFG0_CS_SETUP_SHIFT = 16,
+};
+
+enum {
+ SPI_CFG2_SCK_LOW_SHIFT = 0,
+ SPI_CFG2_SCK_HIGH_SHIFT = 16,
+};
+
+
+#endif
diff --git a/src/soc/mediatek/mt8183/spi.c b/src/soc/mediatek/mt8183/spi.c
index d85138cfb0..0088d46a02 100644
--- a/src/soc/mediatek/mt8183/spi.c
+++ b/src/soc/mediatek/mt8183/spi.c
@@ -13,16 +13,119 @@
* GNU General Public License for more details.
*/
+#include <arch/io.h>
+#include <assert.h>
+#include <spi_flash.h>
+#include <soc/addressmap.h>
#include <soc/flash_controller.h>
-#include <spi-generic.h>
+#include <soc/gpio.h>
+#include <soc/spi.h>
-static const struct spi_ctrlr spi_flash_ctrlr = {
- .max_xfer_size = 65535,
+struct mtk_spi_bus spi_bus[SPI_BUS_NUMBER] = {
+ {
+ .regs = (void *)SPI0_BASE,
+ },
+ {
+ .regs = (void *)SPI1_BASE,
+ },
+ {
+ .regs = (void *)SPI2_BASE,
+ },
+ {
+ .regs = (void *)SPI3_BASE,
+ },
+ {
+ .regs = (void *)SPI4_BASE,
+ },
+ {
+ .regs = (void *)SPI5_BASE,
+ }
};
+void mtk_spi_set_gpio_pinmux(unsigned int bus,
+ enum spi_pad_mask pad_select)
+{
+ switch (bus) {
+ case 0:
+ if (pad_select == SPI_PAD0_MASK) {
+ gpio_set_mode(GPIO(SPI_MI), PAD_SPI_MI_FUNC_SPI0_MI);
+ gpio_set_mode(GPIO(SPI_CSB), PAD_SPI_CSB_FUNC_SPI0_CSB);
+ gpio_set_mode(GPIO(SPI_MO), PAD_SPI_MO_FUNC_SPI0_MO);
+ gpio_set_mode(GPIO(SPI_CLK), PAD_SPI_CLK_FUNC_SPI0_CLK);
+ }
+ break;
+ case 1:
+ if (pad_select == SPI_PAD0_MASK) {
+ gpio_set_mode(GPIO(SPI1_MI),
+ PAD_SPI1_MI_FUNC_SPI1_A_MI);
+ gpio_set_mode(GPIO(SPI1_CSB),
+ PAD_SPI1_CSB_FUNC_SPI1_A_CSB);
+ gpio_set_mode(GPIO(SPI1_MO),
+ PAD_SPI1_MO_FUNC_SPI1_A_MO);
+ gpio_set_mode(GPIO(SPI1_CLK),
+ PAD_SPI1_CLK_FUNC_SPI1_A_CLK);
+ }
+ if (pad_select == SPI_PAD1_MASK) {
+ gpio_set_mode(GPIO(EINT7), PAD_EINT7_FUNC_SPI1_B_MI);
+ gpio_set_mode(GPIO(EINT8), PAD_EINT8_FUNC_SPI1_B_CSB);
+ gpio_set_mode(GPIO(EINT9), PAD_EINT9_FUNC_SPI1_B_MO);
+ gpio_set_mode(GPIO(EINT10), PAD_EINT10_FUNC_SPI1_B_CLK);
+ }
+ break;
+ case 2:
+ if (pad_select == SPI_PAD0_MASK) {
+ gpio_set_mode(GPIO(KPCOL1), PAD_KPCOL1_FUNC_SPI2_MI);
+ gpio_set_mode(GPIO(EINT0), PAD_EINT0_FUNC_SPI2_CSB);
+ gpio_set_mode(GPIO(EINT1), PAD_EINT1_FUNC_SPI2_MO);
+ gpio_set_mode(GPIO(EINT2), PAD_EINT2_FUNC_SPI2_CLK);
+ }
+ break;
+ case 3:
+ if (pad_select == SPI_PAD0_MASK) {
+ gpio_set_mode(GPIO(DPI_D8), PAD_DPI_D8_FUNC_SPI3_MI);
+ gpio_set_mode(GPIO(DPI_D9), PAD_DPI_D9_FUNC_SPI3_CSB);
+ gpio_set_mode(GPIO(DPI_D10), PAD_DPI_D10_FUNC_SPI3_MO);
+ gpio_set_mode(GPIO(DPI_D11), PAD_DPI_D11_FUNC_SPI3_CLK);
+ }
+ break;
+ case 4:
+ if (pad_select == SPI_PAD0_MASK) {
+ gpio_set_mode(GPIO(DPI_D4), PAD_DPI_D4_FUNC_SPI4_MI);
+ gpio_set_mode(GPIO(DPI_D5), PAD_DPI_D5_FUNC_SPI4_CSB);
+ gpio_set_mode(GPIO(DPI_D6), PAD_DPI_D6_FUNC_SPI4_MO);
+ gpio_set_mode(GPIO(DPI_D7), PAD_DPI_D7_FUNC_SPI4_CLK);
+ }
+ break;
+ case 5:
+ if (pad_select == SPI_PAD0_MASK) {
+ gpio_set_mode(GPIO(DPI_D0), PAD_DPI_D0_FUNC_SPI5_MI);
+ gpio_set_mode(GPIO(DPI_D1), PAD_DPI_D1_FUNC_SPI5_CSB);
+ gpio_set_mode(GPIO(DPI_D2), PAD_DPI_D2_FUNC_SPI5_MO);
+ gpio_set_mode(GPIO(DPI_D3), PAD_DPI_D3_FUNC_SPI5_CLK);
+ }
+ break;
+ }
+}
+
+void mtk_spi_set_timing(struct mtk_spi_regs *regs, u32 sck_ticks, u32 cs_ticks)
+{
+ write32(&regs->spi_cfg0_reg,
+ ((cs_ticks - 1) << SPI_CFG0_CS_HOLD_SHIFT) |
+ ((cs_ticks - 1) << SPI_CFG0_CS_SETUP_SHIFT));
+
+ write32(&regs->spi_cfg2_reg,
+ ((sck_ticks - 1) << SPI_CFG2_SCK_HIGH_SHIFT) |
+ ((sck_ticks - 1) << SPI_CFG2_SCK_LOW_SHIFT));
+
+ clrsetbits_le32(&regs->spi_cfg1_reg, SPI_CFG1_CS_IDLE_MASK,
+ ((cs_ticks - 1) << SPI_CFG1_CS_IDLE_SHIFT));
+}
+
const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
{
- .ctrlr = &spi_flash_ctrlr,
+ .ctrlr = &spi_ctrlr,
+ .bus_start = 0,
+ .bus_end = SPI_BUS_NUMBER - 1,
},
};