[PATCH 3/3] MIPS: Loongson1B: Add Loongson1 NAND device
From: Keguang Zhang <keguang.zhang@gmail.com>
Date: 2021-05-21 00:05:15
Also in:
lkml
Subsystem:
mips, mips/loongson1 architecture, the rest · Maintainers:
Thomas Bogendoerfer, Keguang Zhang, Linus Torvalds
From: Kelvin Cheung <keguang.zhang@gmail.com> This patch adds NAND device and its platform data for Loongson1B. Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com> --- .../include/asm/mach-loongson32/platform.h | 2 ++ arch/mips/loongson32/common/platform.c | 27 +++++++++++++++++++ arch/mips/loongson32/ls1b/board.c | 22 +++++++++++++++ 3 files changed, 51 insertions(+)
diff --git a/arch/mips/include/asm/mach-loongson32/platform.h b/arch/mips/include/asm/mach-loongson32/platform.h
index d4d2a9baacdb..daf02b5c83a7 100644
--- a/arch/mips/include/asm/mach-loongson32/platform.h
+++ b/arch/mips/include/asm/mach-loongson32/platform.h@@ -19,11 +19,13 @@ extern struct platform_device ls1x_eth1_pdev; extern struct platform_device ls1x_ehci_pdev; extern struct platform_device ls1x_gpio0_pdev; extern struct platform_device ls1x_gpio1_pdev; +extern struct platform_device ls1x_nand_pdev; extern struct platform_device ls1x_rtc_pdev; extern struct platform_device ls1x_wdt_pdev; void __init ls1x_clk_init(void); void __init ls1x_dma_set_platdata(struct plat_ls1x_dma *pdata); +void __init ls1x_nand_set_platdata(struct plat_ls1x_nand *pdata); void __init ls1x_rtc_set_extclk(struct platform_device *pdev); void __init ls1x_serial_set_uartclk(struct platform_device *pdev);
diff --git a/arch/mips/loongson32/common/platform.c b/arch/mips/loongson32/common/platform.c
index 2092a7ff32e0..d47a84ecf193 100644
--- a/arch/mips/loongson32/common/platform.c
+++ b/arch/mips/loongson32/common/platform.c@@ -287,6 +287,33 @@ struct platform_device ls1x_gpio1_pdev = { .resource = ls1x_gpio1_resources, }; +/* NAND Flash */ +static struct resource ls1x_nand_resources[] = { + [0] = { + .start = LS1X_NAND_BASE, + .end = LS1X_NAND_BASE + SZ_32 - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .name = "dmachan0", + .start = LS1X_DMA_CHANNEL0, + .end = LS1X_DMA_CHANNEL0, + .flags = IORESOURCE_DMA, + }, +}; + +struct platform_device ls1x_nand_pdev = { + .name = "ls1x-nand", + .id = -1, + .num_resources = ARRAY_SIZE(ls1x_nand_resources), + .resource = ls1x_nand_resources, +}; + +void __init ls1x_nand_set_platdata(struct plat_ls1x_nand *pdata) +{ + ls1x_nand_pdev.dev.platform_data = pdata; +} + /* USB EHCI */ static u64 ls1x_ehci_dmamask = DMA_BIT_MASK(32);
diff --git a/arch/mips/loongson32/ls1b/board.c b/arch/mips/loongson32/ls1b/board.c
index 2be4d8544444..dd5a0ce9e4fb 100644
--- a/arch/mips/loongson32/ls1b/board.c
+++ b/arch/mips/loongson32/ls1b/board.c@@ -23,6 +23,26 @@ struct plat_ls1x_dma ls1x_dma_pdata = { .slavecnt = ARRAY_SIZE(ls1x_dma_slave_map), }; +static struct mtd_partition ls1x_nand_parts[] = { + { + .name = "kernel", + .offset = 0, + .size = SZ_16M, + }, + { + .name = "rootfs", + .offset = MTDPART_OFS_APPEND, + .size = MTDPART_SIZ_FULL, + }, +}; + +struct plat_ls1x_nand ls1x_nand_pdata = { + .parts = ls1x_nand_parts, + .nr_parts = ARRAY_SIZE(ls1x_nand_parts), + .hold_cycle = 0x2, + .wait_cycle = 0xc, +}; + static const struct gpio_led ls1x_gpio_leds[] __initconst = { { .name = "LED9",
@@ -53,6 +73,7 @@ static struct platform_device *ls1b_platform_devices[] __initdata = { &ls1x_ehci_pdev, &ls1x_gpio0_pdev, &ls1x_gpio1_pdev, + &ls1x_nand_pdev, &ls1x_rtc_pdev, &ls1x_wdt_pdev, };
@@ -61,6 +82,7 @@ static int __init ls1b_platform_init(void) { ls1x_serial_set_uartclk(&ls1x_uart_pdev); ls1x_dma_set_platdata(&ls1x_dma_pdata); + ls1x_nand_set_platdata(&ls1x_nand_pdata); gpio_led_register_device(-1, &ls1x_led_pdata);
--
2.30.2