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clk: actions: Add Actions S500 SoC Reset Management Unit support 

Add Reset Management Unit (RMU) support for Actions Semi S500 SoC.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/3fba2e6f0edfac97cb8c6ce60f95c24852578eac.1593788312.git.cristian.ciocaltea@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Cristian Ciocaltea 2020-07-03 20:05:11 +03:00 committed by Stephen Boyd
parent fac1d443a2
commit 9fb961da91
1 changed files with 78 additions and 0 deletions
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78
drivers/clk/actions/owl-s500.c
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@ -23,8 +23,10 @@
#include "owl-gate.h"
#include "owl-mux.h"
#include "owl-pll.h"
#include "owl-reset.h"
#include <dt-bindings/clock/actions,s500-cmu.h>
#include <dt-bindings/reset/actions,s500-reset.h>
#define CMU_COREPLL (0x0000)
#define CMU_DEVPLL (0x0004)
@ -497,20 +499,96 @@ static struct clk_hw_onecell_data s500_hw_clks = {
.num = CLK_NR_CLKS,
};
static const struct owl_reset_map s500_resets[] = {
[RESET_DMAC] = { CMU_DEVRST0, BIT(0) },
[RESET_NORIF] = { CMU_DEVRST0, BIT(1) },
[RESET_DDR] = { CMU_DEVRST0, BIT(2) },
[RESET_NANDC] = { CMU_DEVRST0, BIT(3) },
[RESET_SD0] = { CMU_DEVRST0, BIT(4) },
[RESET_SD1] = { CMU_DEVRST0, BIT(5) },
[RESET_PCM1] = { CMU_DEVRST0, BIT(6) },
[RESET_DE] = { CMU_DEVRST0, BIT(7) },
[RESET_LCD] = { CMU_DEVRST0, BIT(8) },
[RESET_SD2] = { CMU_DEVRST0, BIT(9) },
[RESET_DSI] = { CMU_DEVRST0, BIT(10) },
[RESET_CSI] = { CMU_DEVRST0, BIT(11) },
[RESET_BISP] = { CMU_DEVRST0, BIT(12) },
[RESET_KEY] = { CMU_DEVRST0, BIT(14) },
[RESET_GPIO] = { CMU_DEVRST0, BIT(15) },
[RESET_AUDIO] = { CMU_DEVRST0, BIT(17) },
[RESET_PCM0] = { CMU_DEVRST0, BIT(18) },
[RESET_VDE] = { CMU_DEVRST0, BIT(19) },
[RESET_VCE] = { CMU_DEVRST0, BIT(20) },
[RESET_GPU3D] = { CMU_DEVRST0, BIT(22) },
[RESET_NIC301] = { CMU_DEVRST0, BIT(23) },
[RESET_LENS] = { CMU_DEVRST0, BIT(26) },
[RESET_PERIPHRESET] = { CMU_DEVRST0, BIT(27) },
[RESET_USB2_0] = { CMU_DEVRST1, BIT(0) },
[RESET_TVOUT] = { CMU_DEVRST1, BIT(1) },
[RESET_HDMI] = { CMU_DEVRST1, BIT(2) },
[RESET_HDCP2TX] = { CMU_DEVRST1, BIT(3) },
[RESET_UART6] = { CMU_DEVRST1, BIT(4) },
[RESET_UART0] = { CMU_DEVRST1, BIT(5) },
[RESET_UART1] = { CMU_DEVRST1, BIT(6) },
[RESET_UART2] = { CMU_DEVRST1, BIT(7) },
[RESET_SPI0] = { CMU_DEVRST1, BIT(8) },
[RESET_SPI1] = { CMU_DEVRST1, BIT(9) },
[RESET_SPI2] = { CMU_DEVRST1, BIT(10) },
[RESET_SPI3] = { CMU_DEVRST1, BIT(11) },
[RESET_I2C0] = { CMU_DEVRST1, BIT(12) },
[RESET_I2C1] = { CMU_DEVRST1, BIT(13) },
[RESET_USB3] = { CMU_DEVRST1, BIT(14) },
[RESET_UART3] = { CMU_DEVRST1, BIT(15) },
[RESET_UART4] = { CMU_DEVRST1, BIT(16) },
[RESET_UART5] = { CMU_DEVRST1, BIT(17) },
[RESET_I2C2] = { CMU_DEVRST1, BIT(18) },
[RESET_I2C3] = { CMU_DEVRST1, BIT(19) },
[RESET_ETHERNET] = { CMU_DEVRST1, BIT(20) },
[RESET_CHIPID] = { CMU_DEVRST1, BIT(21) },
[RESET_USB2_1] = { CMU_DEVRST1, BIT(22) },
[RESET_WD0RESET] = { CMU_DEVRST1, BIT(24) },
[RESET_WD1RESET] = { CMU_DEVRST1, BIT(25) },
[RESET_WD2RESET] = { CMU_DEVRST1, BIT(26) },
[RESET_WD3RESET] = { CMU_DEVRST1, BIT(27) },
[RESET_DBG0RESET] = { CMU_DEVRST1, BIT(28) },
[RESET_DBG1RESET] = { CMU_DEVRST1, BIT(29) },
[RESET_DBG2RESET] = { CMU_DEVRST1, BIT(30) },
[RESET_DBG3RESET] = { CMU_DEVRST1, BIT(31) },
};
static struct owl_clk_desc s500_clk_desc = {
.clks = s500_clks,
.num_clks = ARRAY_SIZE(s500_clks),
.hw_clks = &s500_hw_clks,
.resets = s500_resets,
.num_resets = ARRAY_SIZE(s500_resets),
};
static int s500_clk_probe(struct platform_device *pdev)
{
struct owl_clk_desc *desc;
struct owl_reset *reset;
int ret;
desc = &s500_clk_desc;
owl_clk_regmap_init(pdev, desc);
reset = devm_kzalloc(&pdev->dev, sizeof(*reset), GFP_KERNEL);
if (!reset)
return -ENOMEM;
reset->rcdev.of_node = pdev->dev.of_node;
reset->rcdev.ops = &owl_reset_ops;
reset->rcdev.nr_resets = desc->num_resets;
reset->reset_map = desc->resets;
reset->regmap = desc->regmap;
ret = devm_reset_controller_register(&pdev->dev, &reset->rcdev);
if (ret)
dev_err(&pdev->dev, "Failed to register reset controller\n");
return owl_clk_probe(&pdev->dev, desc->hw_clks);
}