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rockchip: px30: support debug uart on UART0

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UART0 can obviously also be used for debug uart in U-Boot, so let's add
its support.

Cc: Quentin Schulz <foss+uboot@0leil.net>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Quentin Schulz 2022-09-15 12:12:47 +02:00 committed by Kever Yang
parent d774b2651a
commit d0af506625
2 changed files with 54 additions and 2 deletions
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19
arch/arm/include/asm/arch-rockchip/cru_px30.h
View file

@ -445,5 +445,24 @@ enum {
/* CRU_PMU_CLK_SEL0_CON */
CLK_PMU_PCLK_DIV_SHIFT = 0,
CLK_PMU_PCLK_DIV_MASK = 0x1f << CLK_PMU_PCLK_DIV_SHIFT,
/* CRU_PMU_CLKSEL3_CON */
UART0_PLL_SEL_SHIFT = 14,
UART0_PLL_SEL_MASK = 3 << UART0_PLL_SEL_SHIFT,
UART0_PLL_SEL_GPLL = 0,
UART0_PLL_SEL_24M,
UART0_PLL_SEL_480M,
UART0_PLL_SEL_NPLL,
UART0_DIV_CON_SHIFT = 0,
UART0_DIV_CON_MASK = 0x1f << UART0_DIV_CON_SHIFT,
/* CRU_PMU_CLKSEL4_CON */
UART0_CLK_SEL_SHIFT = 14,
UART0_CLK_SEL_MASK = 3 << UART0_PLL_SEL_SHIFT,
UART0_CLK_SEL_UART0 = 0,
UART0_CLK_SEL_UART0_NP5,
UART0_CLK_SEL_UART0_FRAC,
UART0_DIVNP5_SHIFT = 0,
UART0_DIVNP5_MASK = 0x1f << UART0_DIVNP5_SHIFT,
};
#endif

37
arch/arm/mach-rockchip/px30/px30.c
View file

@ -41,6 +41,7 @@ struct mm_region *mem_map = px30_mem_map;
#define PMUGRF_BASE 0xff010000
#define GRF_BASE 0xff140000
#define CRU_BASE 0xff2b0000
#define PMUCRU_BASE 0xff2bc000
#define VIDEO_PHY_BASE 0xff2e0000
#define SERVICE_CORE_ADDR 0xff508000
#define DDR_FW_BASE 0xff534000
@ -198,6 +199,21 @@ enum {
GPIO3A1_UART5_RX = 4,
};
/* PMUGRF_GPIO0BL_IOMUX */
enum {
GPIO0B3_SHIFT = 6,
GPIO0B3_MASK = 0x3 << GPIO0B3_SHIFT,
GPIO0B3_GPIO = 0,
GPIO0B3_UART0_RX,
GPIO0B3_PMU_DEBUG1,
GPIO0B2_SHIFT = 4,
GPIO0B2_MASK = 0x3 << GPIO0B2_SHIFT,
GPIO0B2_GPIO = 0,
GPIO0B2_UART0_TX,
GPIO0B2_PMU_DEBUG0,
};
/* PMUGRF_GPIO0CL_IOMUX */
enum {
GPIO0C1_SHIFT = 2,
@ -276,12 +292,16 @@ int arch_cpu_init(void)
void board_debug_uart_init(void)
{
#if defined(CONFIG_DEBUG_UART_BASE) && \
(CONFIG_DEBUG_UART_BASE == 0xff168000) && \
(CONFIG_DEBUG_UART_CHANNEL != 1)
(((CONFIG_DEBUG_UART_BASE == 0xff168000) && \
(CONFIG_DEBUG_UART_CHANNEL != 1)) || \
CONFIG_DEBUG_UART_BASE == 0xff030000)
static struct px30_pmugrf * const pmugrf = (void *)PMUGRF_BASE;
#endif
static struct px30_grf * const grf = (void *)GRF_BASE;
static struct px30_cru * const cru = (void *)CRU_BASE;
#if defined(CONFIG_DEBUG_UART_BASE) && CONFIG_DEBUG_UART_BASE == 0xff030000
static struct px30_pmucru * const pmucru = (void *)PMUCRU_BASE;
#endif
#if defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff158000)
/* uart_sel_clk default select 24MHz */
@ -346,6 +366,19 @@ void board_debug_uart_init(void)
GPIO3A2_MASK | GPIO3A1_MASK,
GPIO3A2_UART5_TX << GPIO3A2_SHIFT |
GPIO3A1_UART5_RX << GPIO3A1_SHIFT);
#elif defined(CONFIG_DEBUG_UART_BASE) && (CONFIG_DEBUG_UART_BASE == 0xff030000)
/* uart_sel_clk default select 24MHz */
rk_clrsetreg(&pmucru->pmu_clksel_con[3],
UART0_PLL_SEL_MASK | UART0_DIV_CON_MASK,
UART0_PLL_SEL_24M << UART0_PLL_SEL_SHIFT | 0);
rk_clrsetreg(&pmucru->pmu_clksel_con[4],
UART0_CLK_SEL_MASK,
UART0_CLK_SEL_UART0 << UART0_CLK_SEL_SHIFT);
rk_clrsetreg(&pmugrf->gpio0bl_iomux,
GPIO0B3_MASK | GPIO0B2_MASK,
GPIO0B3_UART0_RX << GPIO0B3_SHIFT |
GPIO0B2_UART0_TX << GPIO0B2_SHIFT);
#else
/* GRF_IOFUNC_CON0 */
enum {