[PATCH V4] ARM: dts: stm32: Add KS8851-16MLL ethernet on FMC2
Patrice CHOTARD
patrice.chotard at st.com
Mon Mar 30 12:12:27 CEST 2020
Hi Marek
On 3/28/20 2:01 AM, Marek Vasut wrote:
> Add DT entries, Kconfig entries and board-specific entries to configure
> FMC2 bus and make KS8851-16MLL on that bus accessible to U-Boot.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Patrick Delaunay <patrick.delaunay at st.com>
> Cc: Patrice Chotard <patrice.chotard at st.com>
> ---
> V2: Configure FMC2 nCS4 for SRAM as well
> V3: Adjust the register macros
> V4: Use more macros
> ---
> arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi | 68 ++++++++++++++++++++++
> board/dhelectronics/dh_stm32mp1/board.c | 52 +++++++++++++++++
> configs/stm32mp15_dhcom_basic_defconfig | 1 +
> 3 files changed, 121 insertions(+)
>
> diff --git a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
> index 6c952a57ee..eba3588540 100644
> --- a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
> +++ b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
> @@ -37,6 +37,12 @@
> default-state = "on";
> };
> };
> +
> + /* This is actually on FMC2, but we do not have bus driver for that */
> + ksz8851: ks8851mll at 64000000 {
> + compatible = "micrel,ks8851-mll";
> + reg = <0x64000000 0x20000>;
> + };
> };
>
> &i2c4 {
> @@ -50,6 +56,68 @@
> };
> };
>
> +&pinctrl {
> + /* These should bound to FMC2 bus driver, but we do not have one */
> + pinctrl-0 = <&fmc_pins_b>;
> + pinctrl-1 = <&fmc_sleep_pins_b>;
> + pinctrl-names = "default", "sleep";
> +
> + fmc_pins_b: fmc-0 {
> + pins1 {
> + pinmux = <STM32_PINMUX('D', 4, AF12)>, /* FMC_NOE */
> + <STM32_PINMUX('D', 5, AF12)>, /* FMC_NWE */
> + <STM32_PINMUX('B', 7, AF12)>, /* FMC_NL */
> + <STM32_PINMUX('D', 14, AF12)>, /* FMC_D0 */
> + <STM32_PINMUX('D', 15, AF12)>, /* FMC_D1 */
> + <STM32_PINMUX('D', 0, AF12)>, /* FMC_D2 */
> + <STM32_PINMUX('D', 1, AF12)>, /* FMC_D3 */
> + <STM32_PINMUX('E', 7, AF12)>, /* FMC_D4 */
> + <STM32_PINMUX('E', 8, AF12)>, /* FMC_D5 */
> + <STM32_PINMUX('E', 9, AF12)>, /* FMC_D6 */
> + <STM32_PINMUX('E', 10, AF12)>, /* FMC_D7 */
> + <STM32_PINMUX('E', 11, AF12)>, /* FMC_D8 */
> + <STM32_PINMUX('E', 12, AF12)>, /* FMC_D9 */
> + <STM32_PINMUX('E', 13, AF12)>, /* FMC_D10 */
> + <STM32_PINMUX('E', 14, AF12)>, /* FMC_D11 */
> + <STM32_PINMUX('E', 15, AF12)>, /* FMC_D12 */
> + <STM32_PINMUX('D', 8, AF12)>, /* FMC_D13 */
> + <STM32_PINMUX('D', 9, AF12)>, /* FMC_D14 */
> + <STM32_PINMUX('D', 10, AF12)>, /* FMC_D15 */
> + <STM32_PINMUX('G', 9, AF12)>, /* FMC_NE2_FMC_NCE */
> + <STM32_PINMUX('G', 12, AF12)>; /* FMC_NE4 */
> + bias-disable;
> + drive-push-pull;
> + slew-rate = <3>;
> + };
> + };
> +
> + fmc_sleep_pins_b: fmc-sleep-0 {
> + pins {
> + pinmux = <STM32_PINMUX('D', 4, ANALOG)>, /* FMC_NOE */
> + <STM32_PINMUX('D', 5, ANALOG)>, /* FMC_NWE */
> + <STM32_PINMUX('B', 7, ANALOG)>, /* FMC_NL */
> + <STM32_PINMUX('D', 14, ANALOG)>, /* FMC_D0 */
> + <STM32_PINMUX('D', 15, ANALOG)>, /* FMC_D1 */
> + <STM32_PINMUX('D', 0, ANALOG)>, /* FMC_D2 */
> + <STM32_PINMUX('D', 1, ANALOG)>, /* FMC_D3 */
> + <STM32_PINMUX('E', 7, ANALOG)>, /* FMC_D4 */
> + <STM32_PINMUX('E', 8, ANALOG)>, /* FMC_D5 */
> + <STM32_PINMUX('E', 9, ANALOG)>, /* FMC_D6 */
> + <STM32_PINMUX('E', 10, ANALOG)>, /* FMC_D7 */
> + <STM32_PINMUX('E', 11, ANALOG)>, /* FMC_D8 */
> + <STM32_PINMUX('E', 12, ANALOG)>, /* FMC_D9 */
> + <STM32_PINMUX('E', 13, ANALOG)>, /* FMC_D10 */
> + <STM32_PINMUX('E', 14, ANALOG)>, /* FMC_D11 */
> + <STM32_PINMUX('E', 15, ANALOG)>, /* FMC_D12 */
> + <STM32_PINMUX('D', 8, ANALOG)>, /* FMC_D13 */
> + <STM32_PINMUX('D', 9, ANALOG)>, /* FMC_D14 */
> + <STM32_PINMUX('D', 10, ANALOG)>, /* FMC_D15 */
> + <STM32_PINMUX('G', 9, ANALOG)>, /* FMC_NE2_FMC_NCE */
> + <STM32_PINMUX('G', 12, ANALOG)>; /* FMC_NE4 */
> + };
> + };
> +};
> +
> &pmic {
> u-boot,dm-pre-reloc;
> };
> diff --git a/board/dhelectronics/dh_stm32mp1/board.c b/board/dhelectronics/dh_stm32mp1/board.c
> index 7bcd713a86..a3458a2623 100644
> --- a/board/dhelectronics/dh_stm32mp1/board.c
> +++ b/board/dhelectronics/dh_stm32mp1/board.c
> @@ -375,6 +375,56 @@ static void sysconf_init(void)
> #endif
> }
>
> +static void board_init_fmc2(void)
> +{
> +#define STM32_FMC2_BCR1 0x0
> +#define STM32_FMC2_BTR1 0x4
> +#define STM32_FMC2_BWTR1 0x104
> +#define STM32_FMC2_BCR(x) ((x) * 0x8 + STM32_FMC2_BCR1)
> +#define STM32_FMC2_BCRx_FMCEN BIT(31)
> +#define STM32_FMC2_BCRx_WREN BIT(12)
> +#define STM32_FMC2_BCRx_RSVD BIT(7)
> +#define STM32_FMC2_BCRx_FACCEN BIT(6)
> +#define STM32_FMC2_BCRx_MWID(n) ((n) << 4)
> +#define STM32_FMC2_BCRx_MTYP(n) ((n) << 2)
> +#define STM32_FMC2_BCRx_MUXEN BIT(1)
> +#define STM32_FMC2_BCRx_MBKEN BIT(0)
> +#define STM32_FMC2_BTR(x) ((x) * 0x8 + STM32_FMC2_BTR1)
> +#define STM32_FMC2_BTRx_DATAHLD(n) ((n) << 30)
> +#define STM32_FMC2_BTRx_BUSTURN(n) ((n) << 16)
> +#define STM32_FMC2_BTRx_DATAST(n) ((n) << 8)
> +#define STM32_FMC2_BTRx_ADDHLD(n) ((n) << 4)
> +#define STM32_FMC2_BTRx_ADDSET(n) ((n) << 0)
> +
> +#define RCC_MP_AHB6RSTCLRR 0x218
> +#define RCC_MP_AHB6RSTCLRR_FMCRST BIT(12)
> +#define RCC_MP_AHB6ENSETR 0x19c
> +#define RCC_MP_AHB6ENSETR_FMCEN BIT(12)
> +
> + const u32 bcr = STM32_FMC2_BCRx_WREN |STM32_FMC2_BCRx_RSVD |
> + STM32_FMC2_BCRx_FACCEN | STM32_FMC2_BCRx_MWID(1) |
> + STM32_FMC2_BCRx_MTYP(2) | STM32_FMC2_BCRx_MUXEN |
> + STM32_FMC2_BCRx_MBKEN;
> + const u32 btr = STM32_FMC2_BTRx_DATAHLD(3) |
> + STM32_FMC2_BTRx_BUSTURN(2) |
> + STM32_FMC2_BTRx_DATAST(0x22) |
> + STM32_FMC2_BTRx_ADDHLD(2) |
> + STM32_FMC2_BTRx_ADDSET(2);
> +
> + /* Set up FMC2 bus for KS8851-16MLL and X11 SRAM */
> + writel(RCC_MP_AHB6RSTCLRR_FMCRST, STM32_RCC_BASE + RCC_MP_AHB6RSTCLRR);
> + writel(RCC_MP_AHB6ENSETR_FMCEN, STM32_RCC_BASE + RCC_MP_AHB6ENSETR);
> +
> + /* KS8851-16MLL -- Muxed mode */
> + writel(bcr, STM32_FMC2_BASE + STM32_FMC2_BCR(1));
> + writel(btr, STM32_FMC2_BASE + STM32_FMC2_BTR(1));
> + /* AS7C34098 SRAM on X11 -- Muxed mode */
> + writel(bcr, STM32_FMC2_BASE + STM32_FMC2_BCR(3));
> + writel(btr, STM32_FMC2_BASE + STM32_FMC2_BTR(3));
> +
> + setbits_le32(STM32_FMC2_BASE + STM32_FMC2_BCR1, STM32_FMC2_BCRx_FMCEN);
> +}
> +
> /* board dependent setup after realloc */
> int board_init(void)
> {
> @@ -398,6 +448,8 @@ int board_init(void)
>
> sysconf_init();
>
> + board_init_fmc2();
> +
> if (CONFIG_IS_ENABLED(CONFIG_LED))
> led_default_state();
>
> diff --git a/configs/stm32mp15_dhcom_basic_defconfig b/configs/stm32mp15_dhcom_basic_defconfig
> index 921dea242a..683f15e7d5 100644
> --- a/configs/stm32mp15_dhcom_basic_defconfig
> +++ b/configs/stm32mp15_dhcom_basic_defconfig
> @@ -93,6 +93,7 @@ CONFIG_SPI_FLASH_MTD=y
> CONFIG_SPL_SPI_FLASH_MTD=y
> CONFIG_DM_ETH=y
> CONFIG_DWC_ETH_QOS=y
> +CONFIG_KS8851_MLL=y
> CONFIG_PHY=y
> CONFIG_PHY_STM32_USBPHYC=y
> CONFIG_PINCONF=y
Reviewed-by: Patrice Chotard <patrice.chotard at st.com>
Thanks
Patrice
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