diff options
| -rw-r--r-- | MAINTAINERS | 7 | ||||
| -rw-r--r-- | drivers/soc/canaan/k210-sysctl.c | 93 | ||||
| -rw-r--r-- | include/soc/canaan/k210-sysctl.h | 41 |
3 files changed, 74 insertions, 67 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 6eff4f720c72..4aaa7a17016b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3860,6 +3860,13 @@ W: https://github.com/Cascoda/ca8210-linux.git F: Documentation/devicetree/bindings/net/ieee802154/ca8210.txt F: drivers/net/ieee802154/ca8210.c +CANAAN/KENDRYTE K210 SOC SYSTEM CONTROLLER DRIVER +M: Damien Le Moal <damien.lemoal@wdc.com> +L: linux-riscv@lists.infradead.org +S: Maintained +F: drivers/soc/canaan/ +F: include/soc/canaan/ + CACHEFILES: FS-CACHE BACKEND FOR CACHING ON MOUNTED FILESYSTEMS M: David Howells <dhowells@redhat.com> L: linux-cachefs@redhat.com (moderated for non-subscribers) diff --git a/drivers/soc/canaan/k210-sysctl.c b/drivers/soc/canaan/k210-sysctl.c index 4608fbca20e1..60b474c33d45 100644 --- a/drivers/soc/canaan/k210-sysctl.c +++ b/drivers/soc/canaan/k210-sysctl.c @@ -12,74 +12,33 @@ #include <linux/bitfield.h> #include <asm/soc.h> +#include <soc/canaan/k210-sysctl.h> + #define K210_SYSCTL_CLK0_FREQ 26000000UL /* Registers base address */ #define K210_SYSCTL_SYSCTL_BASE_ADDR 0x50440000ULL -/* Registers */ -#define K210_SYSCTL_PLL0 0x08 -#define K210_SYSCTL_PLL1 0x0c -/* clkr: 4bits, clkf1: 6bits, clkod: 4bits, bwadj: 4bits */ -#define PLL_RESET (1 << 20) -#define PLL_PWR (1 << 21) -#define PLL_INTFB (1 << 22) -#define PLL_BYPASS (1 << 23) -#define PLL_TEST (1 << 24) -#define PLL_OUT_EN (1 << 25) -#define PLL_TEST_EN (1 << 26) -#define K210_SYSCTL_PLL_LOCK 0x18 -#define PLL0_LOCK1 (1 << 0) -#define PLL0_LOCK2 (1 << 1) -#define PLL0_SLIP_CLEAR (1 << 2) -#define PLL0_TEST_CLK_OUT (1 << 3) -#define PLL1_LOCK1 (1 << 8) -#define PLL1_LOCK2 (1 << 9) -#define PLL1_SLIP_CLEAR (1 << 10) -#define PLL1_TEST_CLK_OUT (1 << 11) -#define PLL2_LOCK1 (1 << 16) -#define PLL2_LOCK2 (1 << 16) -#define PLL2_SLIP_CLEAR (1 << 18) -#define PLL2_TEST_CLK_OUT (1 << 19) -#define K210_SYSCTL_CLKSEL0 0x20 -#define CLKSEL_ACLK (1 << 0) -#define K210_SYSCTL_CLKEN_CENT 0x28 -#define CLKEN_CPU (1 << 0) -#define CLKEN_SRAM0 (1 << 1) -#define CLKEN_SRAM1 (1 << 2) -#define CLKEN_APB0 (1 << 3) -#define CLKEN_APB1 (1 << 4) -#define CLKEN_APB2 (1 << 5) -#define K210_SYSCTL_CLKEN_PERI 0x2c -#define CLKEN_ROM (1 << 0) -#define CLKEN_DMA (1 << 1) -#define CLKEN_AI (1 << 2) -#define CLKEN_DVP (1 << 3) -#define CLKEN_FFT (1 << 4) -#define CLKEN_GPIO (1 << 5) -#define CLKEN_SPI0 (1 << 6) -#define CLKEN_SPI1 (1 << 7) -#define CLKEN_SPI2 (1 << 8) -#define CLKEN_SPI3 (1 << 9) -#define CLKEN_I2S0 (1 << 10) -#define CLKEN_I2S1 (1 << 11) -#define CLKEN_I2S2 (1 << 12) -#define CLKEN_I2C0 (1 << 13) -#define CLKEN_I2C1 (1 << 14) -#define CLKEN_I2C2 (1 << 15) -#define CLKEN_UART1 (1 << 16) -#define CLKEN_UART2 (1 << 17) -#define CLKEN_UART3 (1 << 18) -#define CLKEN_AES (1 << 19) -#define CLKEN_FPIO (1 << 20) -#define CLKEN_TIMER0 (1 << 21) -#define CLKEN_TIMER1 (1 << 22) -#define CLKEN_TIMER2 (1 << 23) -#define CLKEN_WDT0 (1 << 24) -#define CLKEN_WDT1 (1 << 25) -#define CLKEN_SHA (1 << 26) -#define CLKEN_OTP (1 << 27) -#define CLKEN_RTC (1 << 29) +/* Register bits */ +/* K210_SYSCTL_PLL1: clkr: 4bits, clkf1: 6bits, clkod: 4bits, bwadj: 4bits */ +#define PLL_RESET (1 << 20) +#define PLL_PWR (1 << 21) +#define PLL_BYPASS (1 << 23) +#define PLL_OUT_EN (1 << 25) +/* K210_SYSCTL_PLL_LOCK */ +#define PLL1_LOCK1 (1 << 8) +#define PLL1_LOCK2 (1 << 9) +#define PLL1_SLIP_CLEAR (1 << 10) +/* K210_SYSCTL_SEL0 */ +#define CLKSEL_ACLK (1 << 0) +/* K210_SYSCTL_CLKEN_CENT */ +#define CLKEN_CPU (1 << 0) +#define CLKEN_SRAM0 (1 << 1) +#define CLKEN_SRAM1 (1 << 2) +/* K210_SYSCTL_EN_PERI */ +#define CLKEN_ROM (1 << 0) +#define CLKEN_TIMER0 (1 << 21) +#define CLKEN_RTC (1 << 29) struct k210_sysctl { void __iomem *regs; @@ -140,7 +99,7 @@ static unsigned long k210_sysctl_clk_recalc_rate(struct clk_hw *hw, * If the clock selector is not set, use the base frequency. * Otherwise, use PLL0 frequency with a frequency divisor. */ - clksel0 = readl(s->regs + K210_SYSCTL_CLKSEL0); + clksel0 = readl(s->regs + K210_SYSCTL_SEL0); if (!(clksel0 & CLKSEL_ACLK)) return K210_SYSCTL_CLK0_FREQ; @@ -237,11 +196,11 @@ static void __init k210_soc_early_init(const void *fdt) k210_set_bits(PLL_OUT_EN, regs + K210_SYSCTL_PLL0); k210_set_bits(CLKEN_CPU | CLKEN_SRAM0 | CLKEN_SRAM1, - regs + K210_SYSCTL_CLKEN_CENT); + regs + K210_SYSCTL_EN_CENT); k210_set_bits(CLKEN_ROM | CLKEN_TIMER0 | CLKEN_RTC, - regs + K210_SYSCTL_CLKEN_PERI); + regs + K210_SYSCTL_EN_PERI); - k210_set_bits(CLKSEL_ACLK, regs + K210_SYSCTL_CLKSEL0); + k210_set_bits(CLKSEL_ACLK, regs + K210_SYSCTL_SEL0); iounmap(regs); } diff --git a/include/soc/canaan/k210-sysctl.h b/include/soc/canaan/k210-sysctl.h new file mode 100644 index 000000000000..2e037db68f35 --- /dev/null +++ b/include/soc/canaan/k210-sysctl.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2019-20 Sean Anderson <seanga2@gmail.com> + * Copyright (c) 2020 Western Digital Corporation or its affiliates. + */ +#ifndef K210_SYSCTL_H +#define K210_SYSCTL_H + +/* + * Kendryte K210 SoC system controller registers offsets. + * Taken from Kendryte SDK (kendryte-standalone-sdk). + */ +#define K210_SYSCTL_GIT_ID 0x00 /* Git short commit id */ +#define K210_SYSCTL_UART_BAUD 0x04 /* Default UARTHS baud rate */ +#define K210_SYSCTL_PLL0 0x08 /* PLL0 controller */ +#define K210_SYSCTL_PLL1 0x0C /* PLL1 controller */ +#define K210_SYSCTL_PLL2 0x10 /* PLL2 controller */ +#define K210_SYSCTL_PLL_LOCK 0x18 /* PLL lock tester */ +#define K210_SYSCTL_ROM_ERROR 0x1C /* AXI ROM detector */ +#define K210_SYSCTL_SEL0 0x20 /* Clock select controller 0 */ +#define K210_SYSCTL_SEL1 0x24 /* Clock select controller 1 */ +#define K210_SYSCTL_EN_CENT 0x28 /* Central clock enable */ +#define K210_SYSCTL_EN_PERI 0x2C /* Peripheral clock enable */ +#define K210_SYSCTL_SOFT_RESET 0x30 /* Soft reset ctrl */ +#define K210_SYSCTL_PERI_RESET 0x34 /* Peripheral reset controller */ +#define K210_SYSCTL_THR0 0x38 /* Clock threshold controller 0 */ +#define K210_SYSCTL_THR1 0x3C /* Clock threshold controller 1 */ +#define K210_SYSCTL_THR2 0x40 /* Clock threshold controller 2 */ +#define K210_SYSCTL_THR3 0x44 /* Clock threshold controller 3 */ +#define K210_SYSCTL_THR4 0x48 /* Clock threshold controller 4 */ +#define K210_SYSCTL_THR5 0x4C /* Clock threshold controller 5 */ +#define K210_SYSCTL_THR6 0x50 /* Clock threshold controller 6 */ +#define K210_SYSCTL_MISC 0x54 /* Miscellaneous controller */ +#define K210_SYSCTL_PERI 0x58 /* Peripheral controller */ +#define K210_SYSCTL_SPI_SLEEP 0x5C /* SPI sleep controller */ +#define K210_SYSCTL_RESET_STAT 0x60 /* Reset source status */ +#define K210_SYSCTL_DMA_SEL0 0x64 /* DMA handshake selector 0 */ +#define K210_SYSCTL_DMA_SEL1 0x68 /* DMA handshake selector 1 */ +#define K210_SYSCTL_POWER_SEL 0x6C /* IO Power Mode Select controller */ + +#endif |