diff options
author | Stephen Boyd <sboyd@kernel.org> | 2021-10-15 14:57:57 -0700 |
---|---|---|
committer | Stephen Boyd <sboyd@kernel.org> | 2021-10-15 14:57:57 -0700 |
commit | bada0389c2d8c544c4410140bce45aa01aaa59ad (patch) | |
tree | 0caf91c073ccd8c26c4b1ffce206a66aa36652e1 /drivers/clk | |
parent | e974872eb3913902d4a4d1f5724c5060210067e3 (diff) | |
parent | 2bd9feed23166f5ab67dec2ca02bd3f74c77b0ba (diff) |
Merge tag 'renesas-clk-for-v5.16-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-renesas
Pull Renesas clk driver updates from Geert Uytterhoeven:
- Add SPI Multi I/O Bus and SDHI clocks and resets on RZ/G2L
- Add SPI Multi I/O Bus (RPC) clocks on R-Car V3U
- Add MediaLB clocks on R-Car H3, M3-W/W+, and M3-N
* tag 'renesas-clk-for-v5.16-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
clk: renesas: r8a779[56]x: Add MLP clocks
clk: renesas: r9a07g044: Add SDHI clock and reset entries
clk: renesas: rzg2l: Add SDHI clk mux support
clk: renesas: r8a779a0: Add RPC support
clk: renesas: cpg-lib: Move RPC clock registration to the library
clk: renesas: r9a07g044: Add clock and reset entries for SPI Multi I/O Bus Controller
Diffstat (limited to 'drivers/clk')
-rw-r--r-- | drivers/clk/renesas/r8a7795-cpg-mssr.c | 1 | ||||
-rw-r--r-- | drivers/clk/renesas/r8a7796-cpg-mssr.c | 1 | ||||
-rw-r--r-- | drivers/clk/renesas/r8a77965-cpg-mssr.c | 1 | ||||
-rw-r--r-- | drivers/clk/renesas/r8a779a0-cpg-mssr.c | 32 | ||||
-rw-r--r-- | drivers/clk/renesas/r9a07g044-cpg.c | 54 | ||||
-rw-r--r-- | drivers/clk/renesas/rcar-cpg-lib.c | 83 | ||||
-rw-r--r-- | drivers/clk/renesas/rcar-cpg-lib.h | 7 | ||||
-rw-r--r-- | drivers/clk/renesas/rcar-gen3-cpg.c | 89 | ||||
-rw-r--r-- | drivers/clk/renesas/rzg2l-cpg.c | 118 | ||||
-rw-r--r-- | drivers/clk/renesas/rzg2l-cpg.h | 19 |
10 files changed, 318 insertions, 87 deletions
diff --git a/drivers/clk/renesas/r8a7795-cpg-mssr.c b/drivers/clk/renesas/r8a7795-cpg-mssr.c index c32d2c678046..d6b1d0148bfd 100644 --- a/drivers/clk/renesas/r8a7795-cpg-mssr.c +++ b/drivers/clk/renesas/r8a7795-cpg-mssr.c @@ -229,6 +229,7 @@ static struct mssr_mod_clk r8a7795_mod_clks[] __initdata = { DEF_MOD("lvds", 727, R8A7795_CLK_S0D4), DEF_MOD("hdmi1", 728, R8A7795_CLK_HDMI), DEF_MOD("hdmi0", 729, R8A7795_CLK_HDMI), + DEF_MOD("mlp", 802, R8A7795_CLK_S2D1), DEF_MOD("vin7", 804, R8A7795_CLK_S0D2), DEF_MOD("vin6", 805, R8A7795_CLK_S0D2), DEF_MOD("vin5", 806, R8A7795_CLK_S0D2), diff --git a/drivers/clk/renesas/r8a7796-cpg-mssr.c b/drivers/clk/renesas/r8a7796-cpg-mssr.c index 41593c126faf..9c22977e42c2 100644 --- a/drivers/clk/renesas/r8a7796-cpg-mssr.c +++ b/drivers/clk/renesas/r8a7796-cpg-mssr.c @@ -207,6 +207,7 @@ static struct mssr_mod_clk r8a7796_mod_clks[] __initdata = { DEF_MOD("du0", 724, R8A7796_CLK_S2D1), DEF_MOD("lvds", 727, R8A7796_CLK_S2D1), DEF_MOD("hdmi0", 729, R8A7796_CLK_HDMI), + DEF_MOD("mlp", 802, R8A7796_CLK_S2D1), DEF_MOD("vin7", 804, R8A7796_CLK_S0D2), DEF_MOD("vin6", 805, R8A7796_CLK_S0D2), DEF_MOD("vin5", 806, R8A7796_CLK_S0D2), diff --git a/drivers/clk/renesas/r8a77965-cpg-mssr.c b/drivers/clk/renesas/r8a77965-cpg-mssr.c index bc1be8bcbbe4..7eee45a31b2a 100644 --- a/drivers/clk/renesas/r8a77965-cpg-mssr.c +++ b/drivers/clk/renesas/r8a77965-cpg-mssr.c @@ -205,6 +205,7 @@ static const struct mssr_mod_clk r8a77965_mod_clks[] __initconst = { DEF_MOD("lvds", 727, R8A77965_CLK_S2D1), DEF_MOD("hdmi0", 729, R8A77965_CLK_HDMI), + DEF_MOD("mlp", 802, R8A77965_CLK_S2D1), DEF_MOD("vin7", 804, R8A77965_CLK_S0D2), DEF_MOD("vin6", 805, R8A77965_CLK_S0D2), DEF_MOD("vin5", 806, R8A77965_CLK_S0D2), diff --git a/drivers/clk/renesas/r8a779a0-cpg-mssr.c b/drivers/clk/renesas/r8a779a0-cpg-mssr.c index 1ced31b6dbe8..fbd7454f2beb 100644 --- a/drivers/clk/renesas/r8a779a0-cpg-mssr.c +++ b/drivers/clk/renesas/r8a779a0-cpg-mssr.c @@ -37,6 +37,9 @@ enum rcar_r8a779a0_clk_types { CLK_TYPE_R8A779A0_SD, CLK_TYPE_R8A779A0_MDSEL, /* Select parent/divider using mode pin */ CLK_TYPE_R8A779A0_OSC, /* OSC EXTAL predivider and fixed divider */ + CLK_TYPE_R8A779A0_RPCSRC, + CLK_TYPE_R8A779A0_RPC, + CLK_TYPE_R8A779A0_RPCD2, }; struct rcar_r8a779a0_cpg_pll_config { @@ -125,6 +128,10 @@ static const struct cpg_core_clk r8a779a0_core_clks[] __initconst = { DEF_FIXED(".s3", CLK_S3, CLK_PLL1_DIV2, 4, 1), DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL5_DIV4, 1, 1), DEF_RATE(".oco", CLK_OCO, 32768), + DEF_BASE(".rpcsrc", CLK_RPCSRC, CLK_TYPE_R8A779A0_RPCSRC, CLK_PLL5), + DEF_BASE("rpc", R8A779A0_CLK_RPC, CLK_TYPE_R8A779A0_RPC, CLK_RPCSRC), + DEF_BASE("rpcd2", R8A779A0_CLK_RPCD2, CLK_TYPE_R8A779A0_RPCD2, + R8A779A0_CLK_RPC), /* Core Clock Outputs */ DEF_Z("z0", R8A779A0_CLK_Z0, CLK_PLL20, 2, 0), @@ -200,6 +207,7 @@ static const struct mssr_mod_clk r8a779a0_mod_clks[] __initconst = { DEF_MOD("msi3", 621, R8A779A0_CLK_MSO), DEF_MOD("msi4", 622, R8A779A0_CLK_MSO), DEF_MOD("msi5", 623, R8A779A0_CLK_MSO), + DEF_MOD("rpc-if", 629, R8A779A0_CLK_RPCD2), DEF_MOD("scif0", 702, R8A779A0_CLK_S1D8), DEF_MOD("scif1", 703, R8A779A0_CLK_S1D8), DEF_MOD("scif3", 704, R8A779A0_CLK_S1D8), @@ -414,6 +422,15 @@ static struct clk * __init cpg_z_clk_register(const char *name, return clk; } +/* + * RPC Clocks + */ +#define CPG_RPCCKCR 0x874 + +static const struct clk_div_table cpg_rpcsrc_div_table[] = { + { 0, 4 }, { 1, 6 }, { 2, 5 }, { 3, 6 }, { 0, 0 }, +}; + static struct clk * __init rcar_r8a779a0_cpg_clk_register(struct device *dev, const struct cpg_core_clk *core, const struct cpg_mssr_info *info, struct clk **clks, void __iomem *base, @@ -481,6 +498,21 @@ static struct clk * __init rcar_r8a779a0_cpg_clk_register(struct device *dev, div = cpg_pll_config->osc_prediv * core->div; break; + case CLK_TYPE_R8A779A0_RPCSRC: + return clk_register_divider_table(NULL, core->name, + __clk_get_name(parent), 0, + base + CPG_RPCCKCR, 3, 2, 0, + cpg_rpcsrc_div_table, + &cpg_lock); + + case CLK_TYPE_R8A779A0_RPC: + return cpg_rpc_clk_register(core->name, base + CPG_RPCCKCR, + __clk_get_name(parent), notifiers); + + case CLK_TYPE_R8A779A0_RPCD2: + return cpg_rpcd2_clk_register(core->name, base + CPG_RPCCKCR, + __clk_get_name(parent)); + default: return ERR_PTR(-EINVAL); } diff --git a/drivers/clk/renesas/r9a07g044-cpg.c b/drivers/clk/renesas/r9a07g044-cpg.c index 3c518b56c5a6..47c16265fca9 100644 --- a/drivers/clk/renesas/r9a07g044-cpg.c +++ b/drivers/clk/renesas/r9a07g044-cpg.c @@ -29,10 +29,14 @@ enum clk_ids { CLK_PLL2_DIV16, CLK_PLL2_DIV20, CLK_PLL3, + CLK_PLL3_400, + CLK_PLL3_533, CLK_PLL3_DIV2, CLK_PLL3_DIV2_4, CLK_PLL3_DIV2_4_2, CLK_PLL3_DIV4, + CLK_SEL_PLL3_3, + CLK_DIV_PLL3_C, CLK_PLL4, CLK_PLL5, CLK_PLL5_FOUT3, @@ -40,6 +44,12 @@ enum clk_ids { CLK_PLL6, CLK_PLL6_250, CLK_P1_DIV2, + CLK_PLL2_800, + CLK_PLL2_SDHI_533, + CLK_PLL2_SDHI_400, + CLK_PLL2_SDHI_266, + CLK_SD0_DIV4, + CLK_SD1_DIV4, /* Module Clocks */ MOD_CLK_BASE, @@ -56,7 +66,9 @@ static const struct clk_div_table dtable_1_32[] = { }; /* Mux clock tables */ +static const char * const sel_pll3_3[] = { ".pll3_533", ".pll3_400" }; static const char * const sel_pll6_2[] = { ".pll6_250", ".pll5_250" }; +static const char * const sel_shdi[] = { ".clk_533", ".clk_400", ".clk_266" }; static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = { /* External Clock Inputs */ @@ -68,6 +80,8 @@ static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = { DEF_SAMPLL(".pll1", CLK_PLL1, CLK_EXTAL, PLL146_CONF(0)), DEF_FIXED(".pll2", CLK_PLL2, CLK_EXTAL, 133, 2), DEF_FIXED(".pll3", CLK_PLL3, CLK_EXTAL, 133, 2), + DEF_FIXED(".pll3_400", CLK_PLL3_400, CLK_PLL3, 1, 4), + DEF_FIXED(".pll3_533", CLK_PLL3_533, CLK_PLL3, 1, 3), DEF_FIXED(".pll5", CLK_PLL5, CLK_EXTAL, 125, 1), DEF_FIXED(".pll5_fout3", CLK_PLL5_FOUT3, CLK_PLL5, 1, 6), @@ -75,6 +89,11 @@ static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = { DEF_FIXED(".pll6", CLK_PLL6, CLK_EXTAL, 125, 6), DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 1, 2), + DEF_FIXED(".clk_800", CLK_PLL2_800, CLK_PLL2, 1, 2), + DEF_FIXED(".clk_533", CLK_PLL2_SDHI_533, CLK_PLL2, 1, 3), + DEF_FIXED(".clk_400", CLK_PLL2_SDHI_400, CLK_PLL2_800, 1, 2), + DEF_FIXED(".clk_266", CLK_PLL2_SDHI_266, CLK_PLL2_SDHI_533, 1, 2), + DEF_FIXED(".pll2_div16", CLK_PLL2_DIV16, CLK_PLL2, 1, 16), DEF_FIXED(".pll2_div20", CLK_PLL2_DIV20, CLK_PLL2, 1, 20), @@ -82,6 +101,10 @@ static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = { DEF_FIXED(".pll3_div2_4", CLK_PLL3_DIV2_4, CLK_PLL3_DIV2, 1, 4), DEF_FIXED(".pll3_div2_4_2", CLK_PLL3_DIV2_4_2, CLK_PLL3_DIV2_4, 1, 2), DEF_FIXED(".pll3_div4", CLK_PLL3_DIV4, CLK_PLL3, 1, 4), + DEF_MUX(".sel_pll3_3", CLK_SEL_PLL3_3, SEL_PLL3_3, + sel_pll3_3, ARRAY_SIZE(sel_pll3_3), 0, CLK_MUX_READ_ONLY), + DEF_DIV("divpl3c", CLK_DIV_PLL3_C, CLK_SEL_PLL3_3, + DIVPL3C, dtable_1_32, CLK_DIVIDER_HIWORD_MASK), DEF_FIXED(".pll5_250", CLK_PLL5_250, CLK_PLL5_FOUT3, 1, 2), DEF_FIXED(".pll6_250", CLK_PLL6_250, CLK_PLL6, 1, 2), @@ -101,6 +124,14 @@ static const struct cpg_core_clk r9a07g044_core_clks[] __initconst = { DEF_FIXED("ZT", R9A07G044_CLK_ZT, CLK_PLL3_DIV2_4_2, 1, 1), DEF_MUX("HP", R9A07G044_CLK_HP, SEL_PLL6_2, sel_pll6_2, ARRAY_SIZE(sel_pll6_2), 0, CLK_MUX_HIWORD_MASK), + DEF_FIXED("SPI0", R9A07G044_CLK_SPI0, CLK_DIV_PLL3_C, 1, 2), + DEF_FIXED("SPI1", R9A07G044_CLK_SPI1, CLK_DIV_PLL3_C, 1, 4), + DEF_SD_MUX("SD0", R9A07G044_CLK_SD0, SEL_SDHI0, + sel_shdi, ARRAY_SIZE(sel_shdi)), + DEF_SD_MUX("SD1", R9A07G044_CLK_SD1, SEL_SDHI1, + sel_shdi, ARRAY_SIZE(sel_shdi)), + DEF_FIXED("SD0_DIV4", CLK_SD0_DIV4, R9A07G044_CLK_SD0, 1, 4), + DEF_FIXED("SD1_DIV4", CLK_SD1_DIV4, R9A07G044_CLK_SD1, 1, 4), }; static struct rzg2l_mod_clk r9a07g044_mod_clks[] = { @@ -114,6 +145,26 @@ static struct rzg2l_mod_clk r9a07g044_mod_clks[] = { 0x52c, 0), DEF_MOD("dmac_pclk", R9A07G044_DMAC_PCLK, CLK_P1_DIV2, 0x52c, 1), + DEF_MOD("spi_clk2", R9A07G044_SPI_CLK2, R9A07G044_CLK_SPI1, + 0x550, 0), + DEF_MOD("spi_clk", R9A07G044_SPI_CLK, R9A07G044_CLK_SPI0, + 0x550, 1), + DEF_MOD("sdhi0_imclk", R9A07G044_SDHI0_IMCLK, CLK_SD0_DIV4, + 0x554, 0), + DEF_MOD("sdhi0_imclk2", R9A07G044_SDHI0_IMCLK2, CLK_SD0_DIV4, + 0x554, 1), + DEF_MOD("sdhi0_clk_hs", R9A07G044_SDHI0_CLK_HS, R9A07G044_CLK_SD0, + 0x554, 2), + DEF_MOD("sdhi0_aclk", R9A07G044_SDHI0_ACLK, R9A07G044_CLK_P1, + 0x554, 3), + DEF_MOD("sdhi1_imclk", R9A07G044_SDHI1_IMCLK, CLK_SD1_DIV4, + 0x554, 4), + DEF_MOD("sdhi1_imclk2", R9A07G044_SDHI1_IMCLK2, CLK_SD1_DIV4, + 0x554, 5), + DEF_MOD("sdhi1_clk_hs", R9A07G044_SDHI1_CLK_HS, R9A07G044_CLK_SD1, + 0x554, 6), + DEF_MOD("sdhi1_aclk", R9A07G044_SDHI1_ACLK, R9A07G044_CLK_P1, + 0x554, 7), DEF_MOD("ssi0_pclk", R9A07G044_SSI0_PCLK2, R9A07G044_CLK_P0, 0x570, 0), DEF_MOD("ssi0_sfr", R9A07G044_SSI0_PCLK_SFR, R9A07G044_CLK_P0, @@ -182,6 +233,9 @@ static struct rzg2l_reset r9a07g044_resets[] = { DEF_RST(R9A07G044_IA55_RESETN, 0x818, 0), DEF_RST(R9A07G044_DMAC_ARESETN, 0x82c, 0), DEF_RST(R9A07G044_DMAC_RST_ASYNC, 0x82c, 1), + DEF_RST(R9A07G044_SPI_RST, 0x850, 0), + DEF_RST(R9A07G044_SDHI0_IXRST, 0x854, 0), + DEF_RST(R9A07G044_SDHI1_IXRST, 0x854, 1), DEF_RST(R9A07G044_SSI0_RST_M2_REG, 0x870, 0), DEF_RST(R9A07G044_SSI1_RST_M2_REG, 0x870, 1), DEF_RST(R9A07G044_SSI2_RST_M2_REG, 0x870, 2), diff --git a/drivers/clk/renesas/rcar-cpg-lib.c b/drivers/clk/renesas/rcar-cpg-lib.c index 5678768ee1f2..e93f0011eb07 100644 --- a/drivers/clk/renesas/rcar-cpg-lib.c +++ b/drivers/clk/renesas/rcar-cpg-lib.c @@ -267,4 +267,87 @@ free_clock: return clk; } +struct rpc_clock { + struct clk_divider div; + struct clk_gate gate; + /* + * One notifier covers both RPC and RPCD2 clocks as they are both + * controlled by the same RPCCKCR register... + */ + struct cpg_simple_notifier csn; +}; + +static const struct clk_div_table cpg_rpc_div_table[] = { + { 1, 2 }, { 3, 4 }, { 5, 6 }, { 7, 8 }, { 0, 0 }, +}; + +struct clk * __init cpg_rpc_clk_register(const char *name, + void __iomem *rpcckcr, const char *parent_name, + struct raw_notifier_head *notifiers) +{ + struct rpc_clock *rpc; + struct clk *clk; + + rpc = kzalloc(sizeof(*rpc), GFP_KERNEL); + if (!rpc) + return ERR_PTR(-ENOMEM); + + rpc->div.reg = rpcckcr; + rpc->div.width = 3; + rpc->div.table = cpg_rpc_div_table; + rpc->div.lock = &cpg_lock; + + rpc->gate.reg = rpcckcr; + rpc->gate.bit_idx = 8; + rpc->gate.flags = CLK_GATE_SET_TO_DISABLE; + rpc->gate.lock = &cpg_lock; + + rpc->csn.reg = rpcckcr; + + clk = clk_register_composite(NULL, name, &parent_name, 1, NULL, NULL, + &rpc->div.hw, &clk_divider_ops, + &rpc->gate.hw, &clk_gate_ops, + CLK_SET_RATE_PARENT); + if (IS_ERR(clk)) { + kfree(rpc); + return clk; + } + + cpg_simple_notifier_register(notifiers, &rpc->csn); + return clk; +} + +struct rpcd2_clock { + struct clk_fixed_factor fixed; + struct clk_gate gate; +}; + +struct clk * __init cpg_rpcd2_clk_register(const char *name, + void __iomem *rpcckcr, + const char *parent_name) +{ + struct rpcd2_clock *rpcd2; + struct clk *clk; + + rpcd2 = kzalloc(sizeof(*rpcd2), GFP_KERNEL); + if (!rpcd2) + return ERR_PTR(-ENOMEM); + + rpcd2->fixed.mult = 1; + rpcd2->fixed.div = 2; + + rpcd2->gate.reg = rpcckcr; + rpcd2->gate.bit_idx = 9; + rpcd2->gate.flags = CLK_GATE_SET_TO_DISABLE; + rpcd2->gate.lock = &cpg_lock; + + clk = clk_register_composite(NULL, name, &parent_name, 1, NULL, NULL, + &rpcd2->fixed.hw, &clk_fixed_factor_ops, + &rpcd2->gate.hw, &clk_gate_ops, + CLK_SET_RATE_PARENT); + if (IS_ERR(clk)) + kfree(rpcd2); + + return clk; +} diff --git a/drivers/clk/renesas/rcar-cpg-lib.h b/drivers/clk/renesas/rcar-cpg-lib.h index d00c91b116ca..35c0217c2f8b 100644 --- a/drivers/clk/renesas/rcar-cpg-lib.h +++ b/drivers/clk/renesas/rcar-cpg-lib.h @@ -30,4 +30,11 @@ struct clk * __init cpg_sd_clk_register(const char *name, void __iomem *base, unsigned int offset, const char *parent_name, struct raw_notifier_head *notifiers, bool skip_first); +struct clk * __init cpg_rpc_clk_register(const char *name, + void __iomem *rpcckcr, const char *parent_name, + struct raw_notifier_head *notifiers); + +struct clk * __init cpg_rpcd2_clk_register(const char *name, + void __iomem *rpcckcr, + const char *parent_name); #endif diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c index 558191c99b48..741f6e74bbcf 100644 --- a/drivers/clk/renesas/rcar-gen3-cpg.c +++ b/drivers/clk/renesas/rcar-gen3-cpg.c @@ -301,95 +301,10 @@ static struct clk * __init cpg_z_clk_register(const char *name, return clk; } -struct rpc_clock { - struct clk_divider div; - struct clk_gate gate; - /* - * One notifier covers both RPC and RPCD2 clocks as they are both - * controlled by the same RPCCKCR register... - */ - struct cpg_simple_notifier csn; -}; - static const struct clk_div_table cpg_rpcsrc_div_table[] = { { 2, 5 }, { 3, 6 }, { 0, 0 }, }; -static const struct clk_div_table cpg_rpc_div_table[] = { - { 1, 2 }, { 3, 4 }, { 5, 6 }, { 7, 8 }, { 0, 0 }, -}; - -static struct clk * __init cpg_rpc_clk_register(const char *name, - void __iomem *base, const char *parent_name, - struct raw_notifier_head *notifiers) -{ - struct rpc_clock *rpc; - struct clk *clk; - - rpc = kzalloc(sizeof(*rpc), GFP_KERNEL); - if (!rpc) - return ERR_PTR(-ENOMEM); - - rpc->div.reg = base + CPG_RPCCKCR; - rpc->div.width = 3; - rpc->div.table = cpg_rpc_div_table; - rpc->div.lock = &cpg_lock; - - rpc->gate.reg = base + CPG_RPCCKCR; - rpc->gate.bit_idx = 8; - rpc->gate.flags = CLK_GATE_SET_TO_DISABLE; - rpc->gate.lock = &cpg_lock; - - rpc->csn.reg = base + CPG_RPCCKCR; - - clk = clk_register_composite(NULL, name, &parent_name, 1, NULL, NULL, - &rpc->div.hw, &clk_divider_ops, - &rpc->gate.hw, &clk_gate_ops, - CLK_SET_RATE_PARENT); - if (IS_ERR(clk)) { - kfree(rpc); - return clk; - } - - cpg_simple_notifier_register(notifiers, &rpc->csn); - return clk; -} - -struct rpcd2_clock { - struct clk_fixed_factor fixed; - struct clk_gate gate; -}; - -static struct clk * __init cpg_rpcd2_clk_register(const char *name, - void __iomem *base, - const char *parent_name) -{ - struct rpcd2_clock *rpcd2; - struct clk *clk; - - rpcd2 = kzalloc(sizeof(*rpcd2), GFP_KERNEL); - if (!rpcd2) - return ERR_PTR(-ENOMEM); - - rpcd2->fixed.mult = 1; - rpcd2->fixed.div = 2; - - rpcd2->gate.reg = base + CPG_RPCCKCR; - rpcd2->gate.bit_idx = 9; - rpcd2->gate.flags = CLK_GATE_SET_TO_DISABLE; - rpcd2->gate.lock = &cpg_lock; - - clk = clk_register_composite(NULL, name, &parent_name, 1, NULL, NULL, - &rpcd2->fixed.hw, &clk_fixed_factor_ops, - &rpcd2->gate.hw, &clk_gate_ops, - CLK_SET_RATE_PARENT); - if (IS_ERR(clk)) - kfree(rpcd2); - - return clk; -} - - static const struct rcar_gen3_cpg_pll_config *cpg_pll_config __initdata; static unsigned int cpg_clk_extalr __initdata; static u32 cpg_mode __initdata; @@ -600,11 +515,11 @@ struct clk * __init rcar_gen3_cpg_clk_register(struct device *dev, break; case CLK_TYPE_GEN3_RPC: - return cpg_rpc_clk_register(core->name, base, + return cpg_rpc_clk_register(core->name, base + CPG_RPCCKCR, __clk_get_name(parent), notifiers); case CLK_TYPE_GEN3_RPCD2: - return cpg_rpcd2_clk_register(core->name, base, + return cpg_rpcd2_clk_register(core->name, base + CPG_RPCCKCR, __clk_get_name(parent)); default: diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c index 1501547a11a3..4021f6cabda4 100644 --- a/drivers/clk/renesas/rzg2l-cpg.c +++ b/drivers/clk/renesas/rzg2l-cpg.c @@ -17,6 +17,7 @@ #include <linux/delay.h> #include <linux/device.h> #include <linux/init.h> +#include <linux/iopoll.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/of_address.h> @@ -55,6 +56,14 @@ #define GET_REG_SAMPLL_CLK1(val) ((val >> 22) & 0xfff) #define GET_REG_SAMPLL_CLK2(val) ((val >> 12) & 0xfff) +struct sd_hw_data { + struct clk_hw hw; + u32 conf; + struct rzg2l_cpg_priv *priv; +}; + +#define to_sd_hw_data(_hw) container_of(_hw, struct sd_hw_data, hw) + /** * struct rzg2l_cpg_priv - Clock Pulse Generator Private Data * @@ -150,6 +159,112 @@ rzg2l_cpg_mux_clk_register(const struct cpg_core_clk *core, return clk_hw->clk; } +static int rzg2l_cpg_sd_clk_mux_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + return clk_mux_determine_rate_flags(hw, req, 0); +} + +static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index) +{ + struct sd_hw_data *hwdata = to_sd_hw_data(hw); + struct rzg2l_cpg_priv *priv = hwdata->priv; + u32 off = GET_REG_OFFSET(hwdata->conf); + u32 shift = GET_SHIFT(hwdata->conf); + const u32 clk_src_266 = 2; + u32 bitmask; + + /* + * As per the HW manual, we should not directly switch from 533 MHz to + * 400 MHz and vice versa. To change the setting from 2’b01 (533 MHz) + * to 2’b10 (400 MHz) or vice versa, Switch to 2’b11 (266 MHz) first, + * and then switch to the target setting (2’b01 (533 MHz) or 2’b10 + * (400 MHz)). + * Setting a value of '0' to the SEL_SDHI0_SET or SEL_SDHI1_SET clock + * switching register is prohibited. + * The clock mux has 3 input clocks(533 MHz, 400 MHz, and 266 MHz), and + * the index to value mapping is done by adding 1 to the index. + */ + bitmask = (GENMASK(GET_WIDTH(hwdata->conf) - 1, 0) << shift) << 16; + if (index != clk_src_266) { + u32 msk, val; + int ret; + + writel(bitmask | ((clk_src_266 + 1) << shift), priv->base + off); + + msk = off ? CPG_CLKSTATUS_SELSDHI1_STS : CPG_CLKSTATUS_SELSDHI0_STS; + + ret = readl_poll_timeout(priv->base + CPG_CLKSTATUS, val, + !(val & msk), 100, + CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US); + if (ret) { + dev_err(priv->dev, "failed to switch clk source\n"); + return ret; + } + } + + writel(bitmask | ((index + 1) << shift), priv->base + off); + + return 0; +} + +static u8 rzg2l_cpg_sd_clk_mux_get_parent(struct clk_hw *hw) +{ + struct sd_hw_data *hwdata = to_sd_hw_data(hw); + struct rzg2l_cpg_priv *priv = hwdata->priv; + u32 val = readl(priv->base + GET_REG_OFFSET(hwdata->conf)); + + val >>= GET_SHIFT(hwdata->conf); + val &= GENMASK(GET_WIDTH(hwdata->conf) - 1, 0); + if (val) { + val--; + } else { + /* Prohibited clk source, change it to 533 MHz(reset value) */ + rzg2l_cpg_sd_clk_mux_set_parent(hw, 0); + } + + return val; +} + +static const struct clk_ops rzg2l_cpg_sd_clk_mux_ops = { + .determine_rate = rzg2l_cpg_sd_clk_mux_determine_rate, + .set_parent = rzg2l_cpg_sd_clk_mux_set_parent, + .get_parent = rzg2l_cpg_sd_clk_mux_get_parent, +}; + +static struct clk * __init +rzg2l_cpg_sd_mux_clk_register(const struct cpg_core_clk *core, + void __iomem *base, + struct rzg2l_cpg_priv *priv) +{ + struct sd_hw_data *clk_hw_data; + struct clk_init_data init; + struct clk_hw *clk_hw; + int ret; + + clk_hw_data = devm_kzalloc(priv->dev, sizeof(*clk_hw_data), GFP_KERNEL); + if (!clk_hw_data) + return ERR_PTR(-ENOMEM); + + clk_hw_data->priv = priv; + clk_hw_data->conf = core->conf; + + init.name = GET_SHIFT(core->conf) ? "sd1" : "sd0"; + init.ops = &rzg2l_cpg_sd_clk_mux_ops; + init.flags = 0; + init.num_parents = core->num_parents; + init.parent_names = core->parent_names; + + clk_hw = &clk_hw_data->hw; + clk_hw->init = &init; + + ret = devm_clk_hw_register(priv->dev, clk_hw); + if (ret) + return ERR_PTR(ret); + + return clk_hw->clk; +} + struct pll_clk { struct clk_hw hw; unsigned int conf; @@ -311,6 +426,9 @@ rzg2l_cpg_register_core_clk(const struct cpg_core_clk *core, case CLK_TYPE_MUX: clk = rzg2l_cpg_mux_clk_register(core, priv->base, priv); break; + case CLK_TYPE_SD_MUX: + clk = rzg2l_cpg_sd_mux_clk_register(core, priv->base, priv); + break; default: goto fail; } diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h index 191c403aa52f..7fb6b4030f72 100644 --- a/drivers/clk/renesas/rzg2l-cpg.h +++ b/drivers/clk/renesas/rzg2l-cpg.h @@ -11,8 +11,16 @@ #define CPG_PL2_DDIV (0x204) #define CPG_PL3A_DDIV (0x208) +#define CPG_PL2SDHI_DSEL (0x218) +#define CPG_CLKSTATUS (0x280) +#define CPG_PL3_SSEL (0x408) #define CPG_PL6_ETH_SSEL (0x418) +#define CPG_CLKSTATUS_SELSDHI0_STS BIT(28) +#define CPG_CLKSTATUS_SELSDHI1_STS BIT(29) + +#define CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US 20000 + /* n = 0/1/2 for PLL1/4/6 */ #define CPG_SAMPLL_CLK1(n) (0x04 + (16 * n)) #define CPG_SAMPLL_CLK2(n) (0x08 + (16 * n)) @@ -24,12 +32,17 @@ #define DIVPL2A DDIV_PACK(CPG_PL2_DDIV, 0, 3) #define DIVPL3A DDIV_PACK(CPG_PL3A_DDIV, 0, 3) #define DIVPL3B DDIV_PACK(CPG_PL3A_DDIV, 4, 3) +#define DIVPL3C DDIV_PACK(CPG_PL3A_DDIV, 8, 3) #define SEL_PLL_PACK(offset, bitpos, size) \ (((offset) << 20) | ((bitpos) << 12) | ((size) << 8)) +#define SEL_PLL3_3 SEL_PLL_PACK(CPG_PL3_SSEL, 8, 1) #define SEL_PLL6_2 SEL_PLL_PACK(CPG_PL6_ETH_SSEL, 0, 1) +#define SEL_SDHI0 DDIV_PACK(CPG_PL2SDHI_DSEL, 0, 2) +#define SEL_SDHI1 DDIV_PACK(CPG_PL2SDHI_DSEL, 4, 2) + /** * Definitions of CPG Core Clocks * @@ -64,6 +77,9 @@ enum clk_types { /* Clock with clock source selector */ CLK_TYPE_MUX, + + /* Clock with SD clock source selector */ + CLK_TYPE_SD_MUX, }; #define DEF_TYPE(_name, _id, _type...) \ @@ -84,6 +100,9 @@ enum clk_types { DEF_TYPE(_name, _id, CLK_TYPE_MUX, .conf = _conf, \ .parent_names = _parent_names, .num_parents = _num_parents, \ .flag = _flag, .mux_flags = _mux_flags) +#define DEF_SD_MUX(_name, _id, _conf, _parent_names, _num_parents) \ + DEF_TYPE(_name, _id, CLK_TYPE_SD_MUX, .conf = _conf, \ + .parent_names = _parent_names, .num_parents = _num_parents) /** * struct rzg2l_mod_clk - Module Clocks definitions |